Eye anterior segment

Question 1

subconjunctival hemorrhage: cause, tx

Answer 1

trauma, coughing, sneezing. goes away on its own. more diffuse than episcleritis

Question 2

episcleritis: pattern, systemic?, tx?

Answer 2

asymptomatic, sectional, non-systemic, self-resolving

Question 3

scleritis

Answer 3

almost purple color. painful, often systemic

Question 4

limbus

Answer 4

conrneoscleral junction

Question 5

how does stroma of cornea maintain water balance?

Answer 5

endothelial cells pump it out

Question 6

is the cornea vascular? nutrition

Answer 6

avascular. glucose from aqueous. oxygen from tears (environmental). vascularization (pathologic) leads to loss of vision

Question 7

where do corneal epithelial cells come from

Answer 7

limbus

Question 8

do you patch an infected ulcer

Answer 8

no

Question 9

most common cause of infectious corneal blindness

Answer 9

HSV

Question 10

glaucoma: main risk factor, optic nerve appearance, reversible?

Answer 10

high pressure, increased optic cup size relative to disk. optic nerve damage nor reversible

Question 11

acute angle closure glaucoma: presentations, tx, predisposition?

Answer 11

redness, pain, etc. Emergency. Laser iridotomy. Hyperopic (short eye) pts are more likely

Question 12

hyphema

Answer 12

pooling of RBCs. can be result of trauma

Question 13

definitive signs ruptured globe. tx

Answer 13

leakage of aqueous, extruded intraocular contents (teardrop shape). intraocular foreign body. Tx is SHIELD. don’t squeeze or push

Question 14

zonules

Answer 14

suspensory ligaments of lens

Question 15

presbyopia

Answer 15

aging vision. decrease in amt of accommodation of lens

Question 16

opacification of lens. cause?

Answer 16

cataract. usually age-related.

Question 17

classification of cataracts

Answer 17

cortical, nuclear, subcapsular (post subcapsular is most likely to be symptomatic)