glaucoma (cannot be prevented, but goal is to prevent losing eyesight within their lifetime)
epi
2nd most common cause of blindness in world (cataract #1)
asymptomatic!! like htn
glaucoma - no longer just increased intraocular pressure, need nerve damage now for definition
look for donut hole in optic nerve
sensitivity of IOP w/pressure of >21mmHg is 50%!!!!
narrow angle
pressure lowering drug - acetazolamide, timolol
laser iridotomy - putting a hole in the iris to assist in aqueous flow
open angle treatment
-prostaglandins, beta blocker, alpha agonist.
-drainage shunts can be placed
exfoliative glaucoma is when the iris sheds cells and pigment (during pupillary constriction/dilation) and blockes aqueous outflow.
family history
sibling odds ration 3.7
parents odds ratio 2.2
nasal field defect can clue you in to glaucoma because very rare to find neurological cause of nasal field defect
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