When the disparity appears to vary across the visual field ( field-dependent aniseikonia ), as may be the case with an epiretinal membrane or retinal detachment, the aniseikonia cannot fully be corrected with traditional optical techniques like standard corrective lenses.
22.
When the disparity appears to vary across the visual field ( field-dependent aniseikonia ), as may be the case with an epiretinal membrane or retinal detachment, the aniseikonia cannot fully be corrected with traditional optical techniques like standard corrective lenses.
23.
In case of strong anisometropia, contact lenses may be preferable to spectacles because they avoid the problem of visual disparities due to size differences ( aniseikonia ) which is otherwise caused by spectacles in which the refractive power is very different for the two eyes.
