Still get the lazy eye many years after surgery

Dear Ask The Doctor: When I was a child, I pretty often got the lazy eye. It was accompanied by double vision. I had surgery on the eye muscle. Since the operation (I'm an adult now) I still get the lazy eye sometimes. I don't have double vision anymore nor have any other vision problems. One of my eyes is a bit near-sighted. The last time I visited an optometrist, which was a few months ago, I told him that I still get the lazy eye, but he said that in his opinion the operation was very successful. He explained that one of my eyes is a bit weaker (nearsighted), so if I get tired, the "weaker" eye kind of like switches off because it can't see well. I have perfect vision with the other eye. I got glasses, so the nearsighted eye wouldn't get any more weaker. Since then I get the lazy eye a bit more frequently. Should I be concerned?

Dear Victorya: You need not be concerned at this point. As your optometrist as explained your eye 'switches off' when it becomes tired. As your eyes become accustomed to the glasses this will stop. If it does not stop, it may mean that the glasses have not been perfectly adjusted for your eyes. You would then need to see your optometrist to be fitted for a new pair.