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WorksheetsSeeing (tto-1)
Total questions: 17
Worksheet time: 9mins
The outermost membrane of the eye
Sclera
Choroid
Retina
Fovea
The innermost membrane of the eye
Sclera
Choroid
Fovea
Retina
This part of the retina has no rods or cones
Fovea
Choroid
Blind spot
Optic nerve
The spot in the retina right behind the pupil
Fovea
Pupil
Blind spot
Vitreous body
The middle membrane with blood vessels
Sclera
Choroid
Cornea
Retina
The transparant layer of the outermost membrane
Sclera
Cornea
Choroid
Retina
This produces tears
Tear gland
Tear duct
Tear fluid
Eyelashes
What are characteristics of cones?
They work when there is plenty of light; with cones you see colours
They work when there is plenty of light; with cones you see black, white and shades of grey
They work when there is dim light; with cones you see colours
They work when there is dim light; with cones you see black, white and shades of grey
In dim light.....
The radial muscles contract, your pupil becomes smaller
The radial muscles contract, your pupil becomes larger
The circular muscles contract, your pupil becomes smaller
The circular muscles contract, your pupil becomes smaller
When you look at an object far away, your lens will be ....
Convex (round)
Flat
True or false? When you look at an object nearby, the circular muscles in your iris contract.
False
True
When you look at an object nearby, the zonules are ....
tightened
relaxed
When you have a clear vision of distant objects (but not from nearby objects), you are ....
Far sighted
Near sighted
If your eyeball is too long, you are
Short-sighted
Far-sighted
If you are short-sighted you need ...
Concave (-) lenses
Convex (+) lenses
If you are short-sighted, the image falls....
Before the retina
Behind the retina
The name of the transparant gel in the eye
Vitreous body
Cornea
Choroid
Sclera
