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19.4 Chemistry
Vocabulary Words
Question | Answer |
---|---|
cornea | the transparent outer coating of the eye |
pupil | the opening that allows light rays to enter your eye |
iris | the colored part of your eye |
retina | the inner surface of the eye |
rods | light-sensitive neurons in the retina that detect low-intensity light and distinguish black, white, and gray |
cones | light-sensitive neurons in the retina that detect color |
nearsightedness | an eye condition that causes distant objects to be blurry |
farsightedness | an eye condition that causes nearby objects to be blurry |
astigmatism | a condition in which objects at any distance appear blurry because the cornea or lens is misshapen |