vision problems

Question 0

emmetropia

Answer 0

the normal eye; no refractive error

Question 1

accommodation

Answer 1

the process of using muscles to change the shape of the lens to focus

Question 2

presbyopia

Answer 2

old eyes, the lens is hardened so little accommodation, near point increases

Question 3

hyperopia

Answer 3

farsightedness

Question 4

myopia

Answer 4

nearsightedness

Question 5

lateral inhibition

Answer 5

a process that enhances out ability to detect boarders(increases contrast); neighboring cells can inhibit each other via horizontal cells

Question 6

dark adaption

Answer 6

cones adapt really quick, but little improvement whereas rods adapt slowly but show a lot if improvement in vision

Question 7

macular degeneration

Answer 7

cells dying on the fovea; wherever you’re focused, you see a scotoma (blind/blurry spot)

Question 8

retinitis pigmentosa

Answer 8

cells at the bottom of the retina start to die, lose peripheral vision

Question 9

Usher’s Syndrome

Answer 9

when a person is born deaf and develops retinitis pigmentosa. person doing sign language has to be far away

Question 10

diabetic retinopathy

Answer 10

blood vessels leak and pop bc the blood is too thick, causes scotoma

Question 11

hypertensive retinopathy

Answer 11

high blood pressure causing blood vessels in the eye to pop and leak

Question 12

glaucoma

Answer 12

detached retina

Question 13

detached retina

Answer 13

caused by a fall or hit to the head jarring the retina, causes the leaking of vitreous humor