Optical<unk>  due to anisometropia can be corrected by spectacles, contact lenses or refractive corneal surgeries. Spectacle correction is done by changing the optical magnification properties of the auxiliary optics (corrective lenses). The optical magnification properties of spectacle lenses can be adjusted by changing parameters like the base curve, vertex distance, and center thickness. Magnification size matched lenses that are used to correct<unk>  are known as iseikonic lenses. Contact lenses may also provide less difference in retinal image size. Wider and better field of vision is another benefit of contact lens use. The difference in magnification can also be eliminated by a combination of contact lenses and glasses (creating a weak telescope system). The optimum design solution will depend on different parameters like cost, cosmetic implications, and if the patient can tolerate wearing a contact lens. For reducing<unk> , similar to contact lens correction, optical image size difference will be reduced in refractive surgeries also.<unk>  due to uniocular aphakia is best corrected surgically by intraocular lens implantation. Similarly retinal<unk>  is corrected by treating causative retinal disease. Note however that before the optics can be designed, first the<unk>  should be measured. When the image disparity is astigmatic (cylindrical) and not uniform, images can appear wider, taller, or diagonally different. When the disparity appears to vary across the visual field (field-dependent<unk> , as may be the case with an epiretinal membrane or retinal detachment, the<unk>  cannot fully be corrected with traditional optical techniques like standard corrective lenses. However, partial correction often improves the patient's vision comfort significantly.
Aniseikonia
Coprolalia
Synkinesis
Hypermastigia
Echolalia
Acrodynia
Hyperekplexia
Choreoathetosis