human eye

Human eye

by Raag Saluja

Multiple Choice

Human eye resembles a camera. It has a lens screen, ciliary muscles, cornea etc

• Agree

• Disagree

Multiple Choice

Thin membrane of eye through which light enters the eye first and gets refracted

• Cornea

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

It is a dark muscular diaphragm that controls the size of the pupil.

• Cornea

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

Small hole in the iris, appears black because no light is reflected from it.

• Cornea

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

The pupil regulates and controls the amount of light entering the eye.

• True

• False

Multiple Choice

Transparent crystalline lens, made up of fibres, jelly like material, convex in nature.

• Cornea

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

It holds the lens and can modify the lens curvature.

• Cornea

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

It is a screen in the eye, a delicate membrane with a lot of light-sensitive cells called rods and cones

• Retina

• Iris

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

Rods and cones are cells that get activated on illumination and produce electrical signals.

• True

• False

Multiple Choice

It is a nerve connecting eye and brain.

• Retina

• Optic Nerve

• Pupil

• Eye lens

• Ciliary muscles

Multiple Choice

This structure sends images to the brain so we see the image correctly.

• Iris

• Optic Nerve

• Cornea

• Lens

Multiple Choice

Diameter of human eye is approx.

• 2.3 cm

• 3.3 cm

• 4.3 cm

• 1.3 cm

Multiple Choice

Power of Accommodation of Human Eyes. What is the first statement of the video clip?

• Power of Accommodation: the human eye is able to see objects with the help of eye lens and retina

• The eye lens is held by ciliary muscles

• Normal human eye can see nearby and far objects clearly

• Power of Accommodation: The ability of the eye lens to increase or decrease its focal length to some extent by ciliary muscles is called power of accommodation

• Working of eye lens: the eye lens is made of a fibrous jelly-like material and hence it is flexible

Multiple Choice

Power of Accommodation of Human Eyes. What is the second statement of the video clip?

• To see far-off objects clearly, the ciliary muscles relax to decrease curvature of the lens and it becomes thin and it's focal length increases

• The eye lens is held by ciliary muscles

• Normal human eye can see nearby and far objects clearly

• Power of Accommodation: The ability of the eye lens to increase or decrease its focal length to some extent by ciliary muscles is called power of accommodation

• Working of eye lens: the eye lens is made of a fibrous jelly-like material and hence it is flexible

Multiple Choice

Power of Accommodation of Human Eyes. What is the third statement of the video clip?

• To see far-off objects clearly, the ciliary muscles relax to decrease curvature of the lens and it becomes thin and it's focal length increases

• Thus image of far off objects is made on retina and the eye is able to see distant objects

• Normal human eye can see nearby and far objects clearly

• Power of Accommodation: The ability of the eye lens to increase or decrease its focal length to some extent by ciliary muscles is called power of accommodation

• Working of eye lens: the eye lens is made of a fibrous jelly-like material and hence it is flexible

Multiple Choice

Power of Accommodation of Human Eyes. What is the fourth statement of the video clip?

• To see far-off objects clearly, the ciliary muscles relax to decrease curvature of the lens and it becomes thin and it's focal length increases

• Thus image of far off objects is made on retina and the eye is able to see distant objects

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Power of Accommodation: The ability of the eye lens to increase or decrease its focal length to some extent by ciliary muscles is called power of accommodation

• Working of eye lens: the eye lens is made of a fibrous jelly-like material and hence it is flexible

Multiple Choice

Power of Accommodation of Human Eyes. What is the fifth statement of the video clip?

• To see far-off objects clearly, the ciliary muscles relax to decrease curvature of the lens and it becomes thin and it's focal length increases

• Thus image of far off objects is made on retina and the eye is able to see distant objects

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Working of eye lens: the eye lens is made of a fibrous jelly-like material and hence it is flexible

Multiple Choice

Power of Accommodation of Human Eyes. What is the sixth statement of the video clip?

• To see far-off objects clearly, the ciliary muscles relax to decrease curvature of the lens and it becomes thin and it's focal length increases

• Thus image of far off objects is made on retina and the eye is able to see distant objects

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the seventh statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• Thus image of far off objects is made on retina and the eye is able to see distant objects

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the eighth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the ninth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the ninth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the tenth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the tenth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the eleventh statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Power of Accommodation of Human Eyes. What is the twelfth statement of the video clip?

• The eye cannot see objects clearly below 25 centimeter so near point of distinct vision for normal human eye is 25 centimeter

• However, there is no such limit for distant objects therefore for point of normal human eye is infinite

• To see nearby objects, the ciliary muscles contract to increase curvature of the lens and it becomes thick

• Thus focal length of the eye decreases and it is able to see nearby objects distinctly like reading

• Limitation Of Power Of Accommodation: the focal length of the eye cannot be decreased below a specific limit

Multiple Choice

Persistence of vision and colour. What is the first statement of the video clip?

• Persistence Of Vision: Now we are going to discuss about persistence of vision

• The objective of this session is to learn about persistence of vision, let's start the discussion

• Here, there is a fan, this fan is having four leaves one, two, three, four

• There are four leaves. We are going to switch on the fan

• When we are switching on the fan, it will start its rotation

Multiple Choice

Persistence of vision and color. What is the second statement of the video clip?

• Now we are not able to count the number of leaves right because we can see that there are more number of leaves, more than four

• The objective of this session is to learn about persistence of vision, let's start the discussion

• Here, there is a fan, this fan is having four leaves one, two, three, four

• There are four leaves. We are going to switch on the fan

• When we are switching on the fan, it will start its rotation

Multiple Choice

Persistence of vision and color. What is the third statement of the video clip?

• Now we are not able to count the number of leaves right because we can see that there are more number of leaves, more than four

• This phenomenon is known as persistence of vision

• Here, there is a fan, this fan is having four leaves one, two, three, four

• There are four leaves. We are going to switch on the fan

• When we are switching on the fan, it will start its rotation

Multiple Choice

Persistence of vision and color. What is the fourth statement of the video clip?

• Now we are not able to count the number of leaves right because we can see that there are more number of leaves, more than four

• This phenomenon is known as persistence of vision

• It is because of working of brain. We are going to discuss about that.

• There are four leaves. We are going to switch on the fan

• When we are switching on the fan, it will start its rotation

Multiple Choice

Persistence of vision and color. What is the fifth statement of the video clip?

• Now we are not able to count the number of leaves right because we can see that there are more number of leaves, more than four

• This phenomenon is known as persistence of vision

• It is because of working of brain. We are going to discuss about that.

• When we are seeing an object, when we are observing an object the image of that object is going to form in your retina right

• When we are switching on the fan, it will start its rotation

Multiple Choice

Persistence of vision and color. What is the sixth statement of the video clip?

• Now we are not able to count the number of leaves right because we can see that there are more number of leaves, more than four

• This phenomenon is known as persistence of vision

• It is because of working of brain. We are going to discuss about that.

• When we are seeing an object, when we are observing an object the image of that object is going to form in your retina right

• That image will be identified by the brain, that is working of eye right

Multiple Choice

Persistence of vision and color. What is the seventh statement of the video clip?

• The image is forming on the retina and, there is optic nerve and

• This phenomenon is known as persistence of vision

• It is because of working of brain. We are going to discuss about that.

• When we are seeing an object, when we are observing an object the image of that object is going to form in your retina right

• That image will be identified by the brain, that is working of eye right

Multiple Choice

Persistence of vision and color. What is the eighth statement of the video clip?

• The image is forming on the retina and, there is optic nerve and

• This optic nerve is connecting eye and the brain and the brain will identify the image, identify the object

• It is because of working of brain. We are going to discuss about that.

• When we are seeing an object, when we are observing an object the image of that object is going to form in your retina right

• That image will be identified by the brain, that is working of eye right

Multiple Choice

Persistence of vision and color. What is the ninth statement of the video clip?

• The image is forming on the retina and, there is optic nerve and

• This optic nerve is connecting eye and the brain and the brain will identify the image, identify the object

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• When we are seeing an object, when we are observing an object the image of that object is going to form in your retina right

• That image will be identified by the brain, that is working of eye right

Multiple Choice

Persistence of vision and color. What is the tenth statement of the video clip?

• The image is forming on the retina and, there is optic nerve and

• This optic nerve is connecting eye and the brain and the brain will identify the image, identify the object

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• That image will be identified by the brain, that is working of eye right

Multiple Choice

Persistence of vision and color. What is the eleventh statement of the video clip?

• The image is forming on the retina and, there is optic nerve and

• This optic nerve is connecting eye and the brain and the brain will identify the image, identify the object

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Twelfth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• This optic nerve is connecting eye and the brain and the brain will identify the image, identify the object

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Thirteenth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• The sensation of vision produced by the brain will persist in our brain for 1/16th second, this phenomenon is known as persistence of vision

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Fourteenth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• The sensation of vision produced by the brain will persist in our brain for 1/16th second, this phenomenon is known as persistence of vision

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Fifteenth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• The sensation of vision produced by the brain will persist in our brain for 1/16th second, this phenomenon is known as persistence of vision

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Sixteenth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• The sensation of vision produced by the brain will persist in our brain for 1/16th second, this phenomenon is known as persistence of vision

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

Persistence of vision and color. What is the Seventeenth statement of the video clip?

• Still the image will be there in your brain for the duration of

  1/16th second this phenomenon is known as persistence of vision

• The sensation of vision produced by the brain will persist in our brain for 1/16th second, this phenomenon is known as persistence of vision

• When the brain is identifying the object, that image is going to be stored for the duration of 1/16th second in our brain

• This ability of brain is known as persistence of vision

• We are seeing an object and the image of that object will be there in your brain and we are removing that object from your eye sight

Multiple Choice

24 images or more per second, appears to be in motion.

• Sequence of showing

• Persistence of vision:

Multiple Choice

Difference between rods and cones. What is the first statement of the video clip?

• The retina is the inner layer contains three types of cells: rods, cones, and bipolar cells

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

Difference between rods and cones. What is the second statement of the video clip?

• The eye is an incredible biological structure

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

Difference between rods and cones. What is the third statement of the video clip?

• The eye is an incredible biological structure

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

Difference between rods and cones. What is the fourth statement of the video clip?

• The eye is an incredible biological structure

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

Difference between rods and cones. What is the fifth statement of the video clip?

• The eye is an incredible biological structure

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

Difference between rods and cones. What is the sixth statement of the video clip?

• The eye is an incredible biological structure

• The rods are sensitive to intensity of light and cones sense colors.

• The highest concentration of cones is in the fovea centralis

• The nerve impulses are formed when light strikes the rods and cones

• The optic nerve connects to the brain

Multiple Choice

What is color blindness? What is the first statement of the video clip?

• What is color blindness?

• A color festival.; No.

• Color blindness or color deficiency is a vision problem.

• Now, our eyes have light sensitive cells called rods and cones.

• Can I put ice cream on these cones?

Multiple Choice

What is color blindness? What is the Second statement of the video clip?

• You are just unbelievable.

• A color festival.; No.

• Color blindness or color deficiency is a vision problem.

• Now, our eyes have light sensitive cells called rods and cones.

• Can I put ice cream on these cones?

Multiple Choice

What is color blindness? What is the Third statement of the video clip?

• You are just unbelievable.

• Rods are responsible for black and white vision.

• Color blindness or color deficiency is a vision problem.

• Now, our eyes have light sensitive cells called rods and cones.

• Can I put ice cream on these cones?

Multiple Choice

What is color blindness? What is the Fourth statement of the video clip?

• You are just unbelievable.

• Rods are responsible for black and white vision.

• They do not detect color.

• Now, our eyes have light sensitive cells called rods and cones.

• Can I put ice cream on these cones?

Multiple Choice

What is color blindness? What is the Fifth statement of the video clip?

• You are just unbelievable.

• Rods are responsible for black and white vision.

• They do not detect color.

• Whereas, cones detect color.

• Can I put ice cream on these cones?

Multiple Choice

What is color blindness? What is the Sixth statement of the video clip?

• You are just unbelievable.

• Rods are responsible for black and white vision.

• They do not detect color.

• Whereas, cones detect color.

• There are three types of cones.

Multiple Choice

What is color blindness? What is the Seventh statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Rods are responsible for black and white vision.

• They do not detect color.

• Whereas, cones detect color.

• There are three types of cones.

Multiple Choice

What is color blindness? What is the Eighth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• They do not detect color.

• Whereas, cones detect color.

• There are three types of cones.

Multiple Choice

What is color blindness? What is the Ninth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• Whereas, cones detect color.

• There are three types of cones.

Multiple Choice

What is color blindness? What is the Tenth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• There are three types of cones.

Multiple Choice

What is color blindness? What is the Eleventh statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• For example, in red green color blindness, the apple tree may appear like this.

Multiple Choice

What is color blindness? What is the Twelfth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• For example, in red green color blindness, the apple tree may appear like this.

Multiple Choice

What is color blindness? What is the Thirteenth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• For example, in red green color blindness, the apple tree may appear like this.

Multiple Choice

What is color blindness? What is the Fourteenth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• For example, in red green color blindness, the apple tree may appear like this.

Multiple Choice

What is color blindness? What is the Fifteenth statement of the video clip?

• One cone perceives red light, another perceives green and the third perceives blue.

• Together, these cones help us to see the whole spectrum of colors.

• Now in some cases, when one or more types of cones do not work properly, it causes color blindness.

• People with such deficiency have difficulty in distinguishing between certain colors or shades.

• For example, in red green color blindness, the apple tree may appear like this.

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the first statement of the video clip?

• Defects of vision and the correction: the eye may gradually lose its power of accommodation

• In such conditions the person cannot see the objects distinctly and comfortably

• There are mainly three common refractive defects of vision : These are 1. Myopia or nearsightedness. 2. Hyper

  Metropia or four sightedness and 3. Presbyopia

  These defects can be corrected by the use of suitable spherical lenses

• We have discussed below these defects and the correction

• Myopia: The light from a distant object arriving at the eye lense may get converged at a point in front of the retina, in the virtuous body

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Second statement of the video clip?

• This type of defect is called nearsightedness or myopia

• In such conditions the person cannot see the objects distinctly and comfortably

• There are mainly three common refractive defects of vision : These are 1. Myopia or nearsightedness. 2. Hyper

  Metropia or four sightedness and 3. Presbyopia

  These defects can be corrected by the use of suitable spherical lenses

• We have discussed below these defects and the correction

• Myopia: The light from a distant object arriving at the eye lense may get converged at a point in front of the retina, in the virtuous body

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Third statement of the video clip?

• This type of defect is called nearsightedness or myopia

• Let us observe these cases and then you can understand the concept myopia

• There are mainly three common refractive defects of vision : These are 1. Myopia or nearsightedness. 2. Hyper

  Metropia or four sightedness and 3. Presbyopia

  These defects can be corrected by the use of suitable spherical lenses

• We have discussed below these defects and the correction

• Myopia: The light from a distant object arriving at the eye lense may get converged at a point in front of the retina, in the virtuous body

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Fourth statement of the video clip?

• This type of defect is called nearsightedness or myopia

• Let us observe these cases and then you can understand the concept myopia

• In the case of normal eye, the light rays from the object fall on the eye and converge on the retina

• We have discussed below these defects and the correction

• Myopia: The light from a distant object arriving at the eye lense may get converged at a point in front of the retina, in the virtuous body

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Fifth statement of the video clip?

• This type of defect is called nearsightedness or myopia

• Let us observe these cases and then you can understand the concept myopia

• In the case of normal eye, the light rays from the object fall on the eye and converge on the retina

• In the case of myopic eye, the light rays from the object fall on the eye and focuses the light at a point in front of the retina in the virtuous body

• Myopia: The light from a distant object arriving at the eye lense may get converged at a point in front of the retina, in the virtuous body

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Seventh statement of the video clip?

• Hyper Metropia: If the eye lens focuses the incoming light at a point behind the retina this defect is called farsightedness or Hyper Metropia

• Let us observe these cases and then you can understand the concept myopia

• In the case of normal eye, the light rays from the object fall on the eye and converge on the retina

• In the case of myopic eye, the light rays from the object fall on the eye and focuses the light at a point in front of the retina in the virtuous body

• The correction for myopia: to compensate this, we interpose a concave lens between the eye and the object with the diverging effect desired to get the match focused on the retina

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Eighth statement of the video clip?

• Hyper Metropia: If the eye lens focuses the incoming light at a point behind the retina this defect is called farsightedness or Hyper Metropia

• Let us observe these cases and then you can understand the concept

• In the case of normal eye, the light rays from the object fall on the eye and converge on the retina

• In the case of myopic eye, the light rays from the object fall on the eye and focuses the light at a point in front of the retina in the virtuous body

• The correction for myopia: to compensate this, we interpose a concave lens between the eye and the object with the diverging effect desired to get the match focused on the retina

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Ninth statement of the video clip?

• Hyper Metropia: If the eye lens focuses the incoming light at a point behind the retina this defect is called farsightedness or Hyper Metropia

• Let us observe these cases and then you can understand the concept

• Hyper Metropia: in the case of normal eye, the light rays

  from the object fall on the eye, and converge on the retina

• In the case of myopic eye, the light rays from the object fall on the eye and focuses the light at a point in front of the retina in the virtuous body

• The correction for myopia: to compensate this, we interpose a concave lens between the eye and the object with the diverging effect desired to get the match focused on the retina

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Eleventh statement of the video clip?

• Hyper Metropia: If the eye lens focuses the incoming light at a point behind the retina this defect is called farsightedness or Hyper Metropia

• Let us observe these cases and then you can understand the concept

• Hyper Metropia: in the case of normal eye, the light rays

  from the object fall on the eye, and converge on the retina

• In the case of hyper metropic eye, the light rays from the object fall on the eye and focuses the incoming light at a point behind the retina

• The correction for hyper metropic eye: A convergent lens is needed to compensate for the defect in vision

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twelfth statement of the video clip?

• Presbyopia: What is presbyopia?

• Let us observe these cases and then you can understand the concept

• Hyper Metropia: in the case of normal eye, the light rays

  from the object fall on the eye, and converge on the retina

• In the case of hyper metropic eye, the light rays from the object fall on the eye and focuses the incoming light at a point behind the retina

• The correction for hyper metropic eye: A convergent lens is needed to compensate for the defect in vision

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Thirteenth statement of the video clip?

• Presbyopia: What is presbyopia?

• Presbyopia is a common type of vision disorder that occurs at you age

• Hyper Metropia: in the case of normal eye, the light rays

  from the object fall on the eye, and converge on the retina

• In the case of hyper metropic eye, the light rays from the object fall on the eye and focuses the incoming light at a point behind the retina

• The correction for hyper metropic eye: A convergent lens is needed to compensate for the defect in vision

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Fourteenth statement of the video clip?

• Presbyopia: What is presbyopia?

• Presbyopia is a common type of vision disorder that occurs at you age

• It is often referred to as the aging eye condition.

• In the case of hyper metropic eye, the light rays from the object fall on the eye and focuses the incoming light at a point behind the retina

• The correction for hyper metropic eye: A convergent lens is needed to compensate for the defect in vision

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Sixteenth statement of the video clip?

• Presbyopia: What is presbyopia?

• Presbyopia is a common type of vision disorder that occurs at you age

• It is often referred to as the aging eye condition.

• Presbyopia resolves in the inability to focus up close a problem associated with refraction in the eye

• How does presbyopia occur?

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Seventeenth statement of the video clip?

• Presbyopia happens naturally in people as they age

• Presbyopia is a common type of vision disorder that occurs at you age

• It is often referred to as the aging eye condition.

• Presbyopia resolves in the inability to focus up close a problem associated with refraction in the eye

• How does presbyopia occur?

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Eighteenth statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• It is often referred to as the aging eye condition.

• Presbyopia resolves in the inability to focus up close a problem associated with refraction in the eye

• How does presbyopia occur?

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Nineteenth statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close

• Presbyopia resolves in the inability to focus up close a problem associated with refraction in the eye

• How does presbyopia occur?

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twentieth statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close objects

• The ineffective lens causes light to focus behind the retina causing poor vision for objects that are up close

• How does presbyopia occur?

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twenty-First statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close objects

• The ineffective lens causes light to focus behind the retina causing poor vision for objects that are up close

• When you are younger the lens of the eye is soft and flexible allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twenty-Third statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close objects

• The ineffective lens causes light to focus behind the retina causing poor vision for objects that are up close

• When you are younger the lens of the eye is soft and flexible allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twenty-Fourth statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close objects

• The ineffective lens causes light to focus behind the retina causing poor vision for objects that are up close

• When you are younger the lens of the eye is soft and flexible allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects

Multiple Choice

DEFECTS OF VISION AND THEIR CORRECTION. What is the Twenty-Fifth statement of the video clip?

• Presbyopia happens naturally in people as they age

• The eye is not able to focus like directly onto the retina due to the hardening of natural lens

• Aging also affects muscle fibers around the lens making it harder for the eye to focus on up-close objects

• The ineffective lens causes light to focus behind the retina causing poor vision for objects that are up close

• When you are younger the lens of the eye is soft and flexible allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects

Multiple Choice

A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of corrective lens used to restore proper vision?

• concave lens

• convex lens

Multiple Choice

For normal vision, the far point is at ............ distance.

• 25 cm

• 1 m

• 1 m

• Infinite

Multiple Choice

For normal vision, the near point is at ............ distance.

• 25 cm

• 1 m

• 1 m

• Infinite

Multiple Choice

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected? What is the first statement of the audio clip?

• A student is suffering with the eye defect named myopia

• a, in this defect person can see nearby objects clearly but cannot see far off objects distinctly

• It can be corrected by using concave lens

Multiple Choice

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected? What is the Second statement of the audio clip?

• A student is suffering with the eye defect named myopia

• a, in this defect person can see nearby objects clearly but cannot see far off objects distinctly

• It can be corrected by using concave lens

Multiple Choice

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected? What is the Third statement of the audio clip?

• A student is suffering with the eye defect named myopia

• a, in this defect person can see nearby objects clearly but cannot see far off objects distinctly

• It can be corrected by using concave lens

Multiple Choice

The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to

• (a) presbyopia

• (b) accommodation

• (c) near-sightedness

• (d) far-sightedness

Multiple Choice

The least distance of distinct vision for a young adult with normal vision is about

• (a) 25 m.

• (b) 2.5 cm.

• (c) 25 cm.

• (d) 2.5 m.

Multiple Choice

The change in focal length of an eye lens is caused by the action of the

• (a) pupil.

• (b) retina.

• (c) ciliary muscles.

• (d) iris.

Multiple Choice

What kind of lens is present in the human eye?

• Convex lens

• Concave lens

Multiple Choice

Name two parts of the eye that refract light rays (or bend light rays).

• Cornea and Eye-lens.

• Cornea and RETINA

• Retina and Eye-lens.

• Retina and Iris

Multiple Choice

Which parts of your eye controls the amount of light entering the eye?

• retina

• optic nerve

• cornea and lens

• iris

Multiple Choice

This part of the eye carries the message from your eye to the part of your brain that controls vision. 

• cornea
• lens
• optic nerve
• retina

Multiple Choice

In dim light, your pupil will be 

• larger
• smaller

Multiple Choice

Which part of the eye changes the focal length of eye.

• Ciliary muscles

• Suspensory ligaments

• Lens

• Iris

Multiple Choice

Name the curved, transparent front surface of the eye ?

• cornea

• lens

• optic nerve

• retina

Multiple Choice

Name the light-sensitive layer in the eye?

• cornea

• lens

• optic nerve

• retina

Multiple Choice

Where is the image formed in a human eye?

• cornea

• lens

• optic nerve

• retina

Multiple Choice

What is the function of the lens in the human eye? What is the first statement of the audio clip?

• The major function of the lens in the human eye is to change its shape

• and thickness to focus light on the retina.

Multiple Choice

What is the function of the lens in the human eye? What is the Second statement of the audio clip?

• The major function of the lens in the human eye is to change its shape

• and thickness to focus light on the retina.

Multiple Choice

What job does the pupil of the eye do? What is the first statement of the audio clip?

• According to the intensity of light around the eye

• Pupil expands or contracts

Multiple Choice

What job does the pupil of the eye do? What is the second statement of the audio clip?

• According to the intensity of light around the eye

• Pupil expands or contracts