Low vision is when you have lost a partial amount of eyesight. If you have low vision, it will be difficult to read, drive and manage other tasks. You also might find that you have a difficult time differentiating between colors, and lights might seem dimmer than usual.
Some people with low vision experience seeing lifelike images that are not real. This is not a loss of mental capacity, but rather an occasional symptom of vision loss.
Low vision can be caused by macular degeneration, glaucoma, diabetic retinopathy, retinitis pigmentosa, eye cancer or even some brain injuries. Low vision is not a normal cause of aging, and it is a permanent condition. However, low vision can be managed.