Blindness

Blindness was a medical condition affecting the sufferer's eyes, with a large number of possible causes. It caused difficulties with vision, ranging from minor impairment to total loss.

Related conditions were day blindness and night blindness, in which the sufferer was blinded in overly bright or overly dark conditions; color blindness, which caused a blindness to certain colors; and distorted vision such as with astigmatism.

It was one of a number of handicaps that randomly afflicted Grey Orions, due to their genetic mutilation.