Patho of eye

Question 1

strabismus

Answer 1

failure to converge

Question 2

diplopia

Answer 2

cross-eyed, double vision

Question 3

amblyopia

Answer 3

lazy eye

Question 4

nystagmus

Answer 4

alternating smooth & jerky eye movenments, if pathological, usually caused by problem with vestibular system

Question 5

myopic eye

Answer 5

near sighted, rays of light are brought to a focus in front of the retina

Question 6

hyperopic eye

Answer 6

far sighted, rays of light come to a focus behind the retina

Question 7

simple myopic astigmatism

Answer 7

vertical bundle of rays is focused on the retina while the horizontal bundle of rays are focused in front of the retina

Question 8

cataracts

Answer 8

crystalline lens with opacification = clouding of the lens, common in diabetes mellitus

Question 9

glaucoma

Answer 9

extra pressure in the anterior chamber -> damages optic nerve

Question 10

macula degeneration

Answer 10

degeneration of macula - causes central blindness

Question 11

diabetic retinopathy

Answer 11

increased vascular permeability and angiogenesis destroys retina

Question 12

river blindness

Answer 12

parasitic worms, leading cause worldwide, not in the us though

Question 13

Hemidecussation

Answer 13

Rearrangement of the divers of the optic nerves occurring in the optic chiasma in which about half of them cross over to the contra lateral side

Question 14

Bilateral hemianopia

Answer 14

Optic chiasm lesion =lateral vision impaired