Pupillary Assessment 4% Flashcards
(34 cards)
Which nerve pathway originates from cortex(sensory)?
Efferent
Which muscles are innervated by fibers that are carried superficially on 3rd CN?
Ciliary and Iris Sphincter
Which nerve pathway originates in the retinal receptor cells and lead to the cortex (motor)?
Afferent
_____________tests integrity of anterior visual system.
Afferent nerve pathway
Where do nasal fiber cross?
At the chiasm
Temporal fibers are on which side of the body?
They remain on the same side of the body.
What is the normal shape of the pupil?
Round
A not normal or irregular pupil can be cause by……..
Surgery, Synechiae, Trauma, Acute Angle Closure GLC
Size of pupil varies with……..
Age, refractive error, or color of Iris.
Do light colored iris, myopes, and children usually have large or small pupils?
Large
There is no clinical condition in which the light reflex is ______ and the near response is _________.
Present
Absent
What does the Near Reflex Triad consist of?
Accommodation
Convergence
Pupillary constriction
With Light-Near Dissociation ___________ is absent or abnormal and ________is intact>
Light Reflex
Near Response
*Condition in which pupil is > 1 mm difference in size
Anisocoria
With anisocoria pupil should be measured and documented in ………
dark and light
also lid position and iris color should be documents
Nasal fibers cross at the chiasm, temporal pupillary fibers remain on the _____side of the body
Same
*What are some causes of anisocoria?
Horner’s syndrome, 3N palsy, Adie’s pupil, siderosis Bulbi, trauma, pharmacologic agents, physiologic anisocoria(heterochromia)
Condition that is acquired/congentital, benign. Causes ptotic lid, anisocoria, and heterochromia(2diff color irises, light color on side with ptotic lid). Can be caused by lung cancer, trauma, corpus artery aneurism. Pt does not have sweating on the side of face with ptotic lid.
*Horner’s Syndrome
Condition in which pt has anisocoria, larger pupil will not have ptotic lid. Tested with 2.5 methacholine.
Adie’s pupil
*With this condition anisocoria is greater with bright lights on, less with dim lights. Ptotic lid on the side with larger pupil
Third nerve palsy
Diabetic 3rd Nerve Palsy will_____ have pupil involvement
Not
Rust in eye, can cause anisocoria and heterochromia, can darken the iris with FB.
Siderosis Bulbi
When check pupils have or fixate in a ____target, Have a _____lit room, have a ____light in hand. Measure pupils in ______light and _____illumination.
Distant
Dim
Bright
Ambient
Indirect
What can you use to measure pupils?
Pupil gauge