vision loss in one eye

I am 40 years old, wear glasses with prisms and have a lazy eye.  Over the last two weeks I have lost most of my sight in my right eye, the one that has given me most of my problems in the past.  The vision loss aligns with macular degeneration - I can see only a little in the center of my field of vision but the edges are better.  I was tested by my doctor and an opthamologist on Friday and "nothing was found" - though I return on Monday to have a photograph taken of my eye.  I also flew to China and back - returning on Friday, though the condition was there while in China and I think it was there a little before I left.  Are there other things this could be besides macular degeneration?  I am planning to have a transatlantic flight on Tuesday after the appointment and want to have my doctor in the US evaluate as well but am worried about flying.

[Ray T Oyakawa, MD]

It could also be optic nerve disease.  See a neuro-ophthalmologist.

Dr. O.