Acuity of vision is a term used to describe the clearness or sharpness of your vision when measured at a distance of 20 feet. ‌ Visual acuity is the most common clinical measurement of how your eyes ...

Apostilb: A unit of luminance referred to in the SSA listings. Applicability: The extent to which the results of a perimetry technique can be generalized to the target population and setting for which ...

Risk assessment Older age is an important risk factor for most types of visual impairment. Additional risk factors for cataracts are smoking, alcohol use, ultraviolet light exposure, diabetes, ...

Two recent clinical reports of retinal gene therapy with adeno-associated virus (AAV) vectors in patients with Leber’s congenital amaurosis showed initial gains in visual function that subsequently ...