Image Terminology
Single image formed with images from both eyes.
What is fusion?
Movement of the eye toward the midline.
What is adduction?
This condition occurs when the eyes are not aligned and appear to look in different directions.
What is strabismus?
This test is used to determine the amount and direction of eye deviation in strabismus by observing eye movement when one eye is covered.
What is a cover test?
This process keeps an image centered on the fovea using reflexes to maintain clear vision.
What is fixation?
Downward movement of both eyes.
What is infraversion?
Strabismus with an inward deviation.
What is esotropia?
This test assesses depth perception by having the patient identify shapes or patterns seen with both eyes using polarized images.
What is stereopsis/randot/stereofly?
Disorder where 2 images are perceived (one from each eye).
What is diplopia?
When both eyes look towards eachother.
What is convergence?
Strabismus with an upward deviation that is temporary.
What is hyperphoria?
This test uses prisms to measure the amount of eye deviation.
What is the krimsky test?
When the brain ignores one of the images during diplopia.
Binocular eye moment where both eyes look to the right.
What is dextroversion?
A cause of strabismus that occurs when there is a problem with the superior oblique being too tight or too short.
What is brown syndrome?
This screening test for strabismus involves shining a light in the eyes and observing the position of the corneal light reflex relative to the pupil.
What is the Hirschberg light reflex test?
This eye condition causes reduced vision when the brain doesn’t get clear images during development.
What is amblyopia?
Movement of the eyes either towards or away from each other to maintain fusion.
What are vergences?
A congenital cause of strabismus that occurs when there is an incorrect innervation of EOMs by cranial nerves.
What is duane syndrome?
This condition makes a baby’s eyes appear crossed due to a flat nasal bridge and wide spacing of the eyes, even though the visual axes are normal.
What is pseudoesotropia?