People with reduced vision that cannot be corrected by ordinary eyeglasses, contact lenses or intraocular lens implants, are said to have low vision. Low vision is generally defined as visual acuity of 20/70 or less in one or both eyes, which can hamper daily activities such as reading and driving. Low vision is generally associated with aging, the most common cause being macular degeneration. It can also result from birth defects, inherited diseases, injuries, diabetes, glaucoma and cataract. Low vision is not the same as blindness, as some vision is retained. Low vision can often be improved with the use of special devices and lifestyle aids.
Greatly reduced visual acuity; most commonly, reduced central or reading vision
Descemet’s membrane endothelial keratoplasty (DMEK)