Eye Flashcards
what sport is the leading cause of eye injury in the US?
basketball
what proportion of the population may have physiologic anisocoria?
20%
t/f history of cataract or refractive surgery weakens the outer wall of the eye
true
a child is considered functionally one eyed if their vision is worse than what?
20/40
what are the only sports that are absolutely contraindicated for a functionally one eye athlete?
boxing and full contact MMA
what is the single most important physical exam feature in evaluation of the eye?
visual acuity testing
which cranial nerve is responsible for the afferent and efferent pupil response, respectively?
afferent - CN2
efferent - CN3
what is Marcus Gunn pupil?
shining light to the affected pupil causes a paradoxical dilation but the contralateral pupil constricts
explain how to assess the anterior chamber of the eye?
shine light from temporal portion towards medial portion
when evaluating the anterior chamber with a lateral light, you see increased medial shadowing. what might this signify?
narrow anterior chamber
when assessing the anterior chamber, you note a layer of blood forming at the 6 o clock position. what does this signify?
hyphema
t/f suspected acute angle glaucoma is a contraindication to pupillary dilation
true
decreased sensation or numbness along which trigeminal nerve branch can accompany orbital floor fractures?
v2
what topical anesthetic agent can be used for analgesia prior to fluoroscein exam?
proparacaine
explain how to conduct a fluorescein exam
numb with proparacaine, then wet a fluorescein strip with sterile water and touch to the inferior cul de sac, without brushing the cornea. Then use a wood’s lamp to evaluate
what is a normal IOP?
10-21mmHg
