On the relation between aniseikonia and axial anisometropia

A dichoptic, size-matching technique was used to evaluate aniseikonia in a sample of axial anisometropes. During testing, the subjects were optically corrected to minimize differences in retinal image size. A clinically significant degree of aniseikonia was measured which varied in proportion to the magnitude of anisometropia. These results may reflect interocular differences in the spatial density of the retinal elements secondary to anisometropic ocular growth.