Aniseikonia Flashcards
It is a binocular condition, so the image in one eye is perceived as different in size compared to the image in the other eye
Aniseikonia
Aniseikonia is a Greek term which means?
Unequal images
He commented upod the probability of unequal image sizes
Donders
He discussed the possibility
C. Hess
He designed iseikonic lenses for aniseikonia
Von Rohr
Condition in which the size and shape of the ocular images are equal
Iseikonia
Condition which ocular images are unequal in size and shape
Aniseikonia
Lenses which correct aniseikonia and include the correction of refractive error
Iseikonic Lenses
Eyes are gazing in a certain direction; images are different in size
Static Aniseikonia
Optically induced anisophoria; eyes have to rotate a different amount to gaze at the same point in space
Dynamic Aniseikonia
The size of one ocular image is symmetrically larger than the other
Symmetrical Overall
The size of one ocular image is symmetrically larger than the other in one meridian only
Symmetrical Meridional
Combination of overall and meridional is manifested
Symmetrical Compound
Variation in size differ from different positions of the visual field
Assymetrical
Image distortion increases progressively in both directions
Assymetrical Pincushion
Image distortion decreases progressively in both directions
Assymetrical Barrel
Image difference increases progressively in one direction
Assymetrical Prismatic
Image size remains the same but there occurs an oblique distortion of shape
Assymetrical Oblique
Assymetric convergence and stereoscopic disparities exists as when veiwing the object located to one side
Normal
Based on binocular space perception
Space Eikonometric Method
Based on directly comparing perceived image sizes between the two eyes
Direct Comparison Method
Uses as a target a cross with a small white disc at the center of a black square at its intersection
Space Eikonometer
The Awaya test for Aniseikonia provides a manual method to detect and calibrate the aniseikonic condition
New Aniseikonia Test
An easy-to-use Windows software program to test the aniseikonia of a patient
Basic Aniseikonia Test
A Windows software program for the clinical management of aniseikonia. It contains an advanced aniseikonic test, and a design tool to calculate correcting prescriptions.
Aniseikonia Inspector
