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Flashcards in Pupil Deck (12):
1

what is miosis

iris sphincter contracts the pupil via CN3

2

what is mydriasis

iris dilator muscle dilates via symp

3

what is aniscoria

unequal pupil sizes

4

what is physiological anisocria

less than 1mm (25%) of pop

5

what is pathologic aniscoria

>1mm

6

what is a mydriatic disorder

abnormal pupil unable to constrict

7

causes of mydriatic disorder

CN3 palsy, acute angle glaucoma, adie's pupil, trauma

8

what causes miotic disorder

horners, iritis, cholinergic drugs

9

what is pathway of pupillary reaction to light

1. light stims retina>pretectal nucleus>BOTH erdinger westphals> ciliary ganglion>iris sphincter contraction

10

what is relative afferent pupillary defect (RAPD)

get a paradoxical dilation of the affected eye when the flashlight is shone in during the swinging flashlight test

11

2 causes of RAPD

1. optic nerve disease
2. retinal disease

12

6 things that do NOT cause RAPD

1. cataract
2. corneal scar
3. refractive error
4. cortical blindness
5. vitreous hemmorage
6. functional visual loss

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