Ophtha Ocular Motility Flashcards
The degree of deviation is unequal in different fields of gaze
Imconcomitant strabismus
degree of deviation is equal in all fields of gaze
Concomitant strabismus
Normal eye fixes
Paretic eye deviates
Primary deviation
Paretic eye fixes
Normal eye deviates
Secondary deviation
Eye deviation that cannot be controlled by binocular vision
Heterotropia or strabismus
Absence of tendency for eyes to deviate when sion is suspended
Orthophoria
A unit of angular measurement used to characterize ocular deviations
Prism diopter
Muscles in the 2 eyes producing a particular gaze
Yoke muscles
Agonist contracted
Antagonist inhibited impulse
Sherrington’s law of reciprocal innervation
Yoke muscles receive equal amounts of innervation
Herring’s law of motor correspondence
1mm=7 degree deviation
Light at pupil edge=15 degrees
Midway between pupil and iris= 30
Iris edge=45
21 PD= 1mm
Hirschberg test
Ism position test
Krimsky test
Range of motion same and at the same time
Version
Range of motion one at a time
Duction
