Pathway Of Light

Question 1

Where does the light need to be focused?

Answer 1

-on the retina for optimal vision

Question 2

Where is light bent?

Answer 2

-on the cornea, lens, aqueous+vitreous humor

Question 3

How far can the average healthy eye see?

Answer 3

20 feet

Question 4

What is accommodation?

Answer 4

-when the lens changes shape to focus on objects closer than 20ft away

Question 5

What is emmitrophia?

Answer 5

-eye focuses on images correctly on the retina

Question 6

What is myopia?

Answer 6

-it is nearsightedness, distant images are blurry
-light lands before retina, causing eyeball to be too long

Question 7

What is hyperophia?

Answer 7

-farsightedness, close images are blurry
-light lands behind the retina, resulting in too short of an eye/ “lazy lens”

Question 8

What is astigmatism?

Answer 8

-images are blurry
-light focuses on lens, not the retina due to unequal curves on lens/cornea

Question 9

What is glaucoma?

Answer 9

-can cause blindness through increasing pressure of the eye