Parts of the Eye
Image Formation
Light & Vision
Eye Defects
100

The part of the eye which controls the amount of light entering through the pupil.

What is the iris?

100

The position of the image formed on the retina (upright or inverted).

What is inverted?

100

The colour of visible which light has the longest wavelength.

What is red?

100

The eye defect when a person cannot see nearby objects clearly?

What is hyperopia (long-sightedness)?

200

The structure of the eye which acts as a converging lens.

What is the eye lens?

200

The nerve that sends signals from the retina to the brain.

What is the optical nerve?

200

The reason objects appear to have different colours.

What is the reflection and absorption of different wavelengths of light?

200

The type of lens used to correct long-sightedness.

What is a convex (converging) lens?

300

The part of the eye on which is light focused to produce an image.

What is the retina?

300

The process light undergoes when passing through the lens.

What is converging?

300

The process by which the eye changes the shape of its lens to focus objects at different distances.

What is accomodation?

300

Where the image is formed (in relation to the retina) in short-sightedness. 

Where is in front of the retina?

400

The function of the iris when exposed to very bright light.

What is ‘to make the size of the pupil smaller’?

400

The image on the retina becomes ___ when the eye cannot focus incoming light correctly

What is blurry?

400

The reason a pencil appears bent when placed in a glass of water.

What is the refraction of light?

400

How a convex lens fixes long-sightedness.

What is ‘converging light rays, so that they focus onto the retina’?

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