defects of vision

Some people can not see distant objects clearly without spectacles. This defect is called

• accommodation

• stress

• farsightedness

• nearsightedness

The disability of the eye to form distinct images of nearby objects on its retina at a young age is known as

• nearsightedness

• farsightedness

• presbyopia

• stress

How eyes adjust in order to focus the image of near or distant objects on retina?

• (a) The lens moves in or out according to the position of the object

• (b) The retina moves in or out according to the position of the object

• (c) The lens becomes thicker or thinner according to the position of the object

• (d) The pupil gets larger or smaller according to the position of the object

What is the pupil?

• organ

• hole

• muscle

What does farsighted mean?

• You can see far away well.
• You can see close up well.
• You have perfect sight.
• You are blind.

What does farsighted mean?

• You can see far away well.
• You can see close up well.
• You have perfect sight.
• You are blind.

What part of your eye sends the messages to and from your brain?

• retina
• optic nerve
• iris
• vitreous humor

What part of your eye is a muscle?

• iris
• sclera
• pupil
• retina

An image is formed on

• Iris

• Pupil

• Retina

• Cornea

Light enters the eye through a thin membrane called the

• Iris

• Pupil

• Retina

• Cornea

Tags

NGSS.MS-LS1-8