The part of the eye which controls the amount of light entering through the pupil.
What is the iris?
The position of the image formed on the retina (upright or inverted).
What is inverted?
The colour of visible which light has the longest wavelength.
What is red?
The eye defect when a person cannot see nearby objects clearly?
What is hyperopia (long-sightedness)?
The structure of the eye which acts as a converging lens.
What is the eye lens?
The nerve that sends signals from the retina to the brain.
What is the optical nerve?
The reason objects appear to have different colours.
What is the reflection and absorption of different wavelengths of light?
The type of lens used to correct long-sightedness.
What is a convex (converging) lens?
The part of the eye on which is light focused to produce an image.
What is the retina?
The process light undergoes when passing through the lens.
What is converging?
The process by which the eye changes the shape of its lens to focus objects at different distances.
What is accomodation?
Where the image is formed (in relation to the retina) in short-sightedness.
Where is in front of the retina?
The function of the iris when exposed to very bright light.
What is ‘to make the size of the pupil smaller’?
The image on the retina becomes ___ when the eye cannot focus incoming light correctly
What is blurry?
The reason a pencil appears bent when placed in a glass of water.
What is the refraction of light?
How a convex lens fixes long-sightedness.
What is ‘converging light rays, so that they focus onto the retina’?