It’s a loss of sight that can’t be corrected with prescription eyeglasses, contact lenses or surgery. Low vision doesn’t include complete blindness, because you will have some sight left. It can be treated or offset, however, with vision aids like magnifying glasses.
The condition includes different degrees of sight loss. You might have a blind spot or an almost complete loss of sight. The Academy of Ophthalmology divides low vision into two categories based on the vision in your best eye:
Partially sighted: Your vision is between 20/40 and 20/200 with conventional prescription lenses.
Legally Blind : Your vision is no better than 20/200 with conventional correction, or you have a restricted field of vision less than 20 degrees wide.
The most common ones include: