NDD#21 Loss Of Kidney Function

What is the primary function of the cornea in the eye?

• It is the main structure for refraction of light entering the eye.

• It regulates the size of the pupil.

• It connects the eye to the brain.

• It contains photoreceptor cells sensitive to light.

What is the role of the iris in the eye?

• It focuses light onto the retina.

• It regulates the size of the pupil in response to light intensity.

• It refracts light to assist in image formation.

• It protects the eye from physical damage.

Which of the following is NOT a function of the lens in the eye?

• Accommodating for close and far vision.

• Refracting light to focus it on the retina.

• Producing aqueous humor.

• Changing shape to allow for vision at different distances.

What are the two main types of photoreceptor cells in the retina?

• Iris and cornea

• Rods and cones

• Lens and sclera

• Aqueous and vitreous humors

What is myopia?

• Long-sightedness

• Short-sightedness

• Cloudiness in the lens

• Degeneration of the macula

What causes the flexibility of the lens to decrease, affecting vision?

• Increase in vitreous humor

• Aging

• Decrease in aqueous humor

• Strengthening of the cornea

What is the main cause of cataracts?

• Degeneration of photoreceptor cells

• Clumping of proteins in the lens

• Decrease in the size of the pupil

• Overproduction of aqueous humor

What is the primary function of the optic nerve?

• To regulate the amount of light entering the eye

• To protect the eye from physical damage

• To carry visual information from the retina to the brain

• To change the shape of the lens

What is the significance of the fovea in the eye?

• It produces the aqueous humor.

• It is responsible for the eye's ability to see in low light.

• It is where the optic nerve exits the eye, creating a blind spot.

• It contains a high density of cones for sharp central vision.

What is hyperopia?

• The ability to see well in the dark

• Short-sightedness

• Long-sightedness

• The loss of color vision