Name the part of the eye that does most of the bending of light, controls the amount of light that…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Name the part of the eye that
- does most of the bending of light,
- controls the amount of light that enters,
- changes the shape of the lens,
- is the screen on which the image forms,
- carries the signals to the brain.
Need a reminder? The key ideaShow
The cornea and the eye lens form a real, inverted, small image on the retina, about behind the lens. The iris sets the size of the pupil. The ciliary muscles change the lens (accommodation). A normal eye sees clearly from its near point, about , to its far point at infinity.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) The cornea: light bends most where it first enters, from air.
Step 2. (b) The iris, which changes the size of the pupil.
Step 3. (c) The ciliary muscles.
Step 4. (d) The retina.
Step 5. (e) The optic nerve.
Answer: cornea, iris, ciliary muscles, retina, optic nerve.
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