I'm mostly blind in one eye. --The center of the pupil was destroyed by a parasite when I was very young, and I have no memories of normal sight. I do have some peripheral vision in that eye, but not enough to read or perform normal activities, especially because I have to turn my head to see, such as it is - I can make out certain objects and get a sense of colors, but nothing is clear - reading would be out of the question, for example.

Describing my lack of sight is difficult, because few people have the necessary frame of reference to understand. The best way I've found to describe it is to say that I can only see one side of my nose. Now, I know the other side is there, obviously, because I can look in a mirror and see it with my good eye. But without a mirror, that side of my nose doesn't exist to my vision. --There's not a dark blob or anything like that - it simply does not exist.

It also means I have no real depth perception. I have to try and estimate the distance of an object based on what I know of it's true size - when it's moving towards me, I don't get a real sense that it's actually coming at me, just that it's getting larger at some rate. Needless to say, that makes playing games like baseball very diffciult as there is not necessarily other objects around that make it easier for me to recognize the rate at which the ball is flying towards me.