I think it is because they are specialists, some specialize in the cornea for example or the retina for example. I have issues with both in both eyes. And I have had surgery on both, so once you do surgery on one part it complicates the other part. They don't see people like me walk in the door very often and it is not in the textbook so it is always a little bit tense. I went to university hospital one time and I think every student in the place looked in my eye i'm used to it by now but sometimes I have to just laugh.I didn't know there were doctors for different parts of the eye, that's interesting, I guess I just assumed the eye is much more simple than it is... although yes I know its actually quite un-simple, but I didn't know that. Its like my friend always says... why don't my doctor have meetings and discuss/work out things rather than getting no where.