Ocular Motility/Muscles Flashcards
(27 cards)
Superior Rectus
Upward Movement
Superior Oblique
Downward and Outward Movement
Medial Rectus
Forward Movement
Inferior Rectus
Downward Movement
Inferior Oblique
Upward and Outward Movement
Lateral Rectus
Outward Movement
Versions
Movements of both eyes in the same direction
Vergence
Movement of both eyes in opposite direction
Ductions
Movement of one eye
Saccades
fast conjugate eye movements that change to point of foveal fixation
Smooth Pursuits
slower tracking movements of the eyes designed to keep a moving stimulus on the fovea
Vergence Movements
movement of the two eyes in opposite direction
Vestibulo-ocular movements
reflex responses that stabilize the eyes relative to the external world, compensating for head movements
Third Cranial nerve affects
Medial rectus, Superior Rectus, Inferior Rectus, Inferior Oblique
Fourth Cranial nerve affects
Superior oblique
Six Cranial nerve affects
Lateral Rectus
8 types of strabismus
Exotropia
Esotropia
Hypertropia
Hypotropia
Pseudostrabismus
Esophoria
Exophoria
Hyperphoria
What type of prism measures an esotropia?
Base out prism
What type of prism measures an exotropia?
Base in prims
What type of prism measures an hypertropia?
Base down prism
What does the cover uncover test?
Too see if there is a deviation
What is the Hirschberg test?
Using a pen light to look at the reflection of they eyes to see if the reflection is hitting in the same spot on both eyes.
What does the Worth’s Four Dot test?
It sees if both eyes are working together, and tells us if one of the eyes is being suppressed.
If the patient is seeing 3 green and 2 red or 2 green and 2 red…..
This is normal
