gimme_this_gimme_that@yahoo.com wrote in news:1154226558.071885.145220 @i42g2000cwa.googlegroups.com:
> He said everyone has diplopia when they look too far out of their > peripheral vision and wondered if I was just noticing it for the first > time. I told him that couldn't be the case because on my left side I > could focus and see a single object but if I rotated my body and looked > at the same object I could see two. While its impossible to know that this what's going on for you through an internet posting, so this is more an explanation of what this doc was talking about and not really about your specific case, this is not an uncommon thing. For example, if you're looking at your finger just 20 cm in front of your eyes or so, everyone who can properly fuse on their finger will "see" one finger, and double vision in the background. Because of how vision works, the brain pays no attention to the double vision in the background. In some cases, for whatever reason, some people have trouble ignoring the double vision in the background.
So, the ophthalmologists, for an exam like this, should be doing alot of testing to make sure your two eyes are aligned (as it's the misalignment that would cause a non-natural double vision). They might have you look at a distant target, and alternately cover one eye at a time to see if you make a gaze adjustment when the cover is switched from one eye to the other. They might use a Maddox rod, which looks sort of like a red bicycle reflector. This "smears out" a spot of light for one eye, but not for the other, and they'll ask you whether the spot of light sits right on the streak of light. They'll ask you to look at a variety of targets in a variety of different positions of gaze, and look for obvious misalignments, as extreme gaze positions tend to make the misaligniments more dramatic.
That said, I've been to an ophthalmoligist with a complaint about a spot that appeared in the lower periphery of each eye following a migraine. The guy had me refracted, and then spent all of a few minutes with me doing an indirect ophthalmoscopic exam. He told me that there was a congenital cataract in one eye that shouldn't impact my vision at all, and my retinas were fine, then he left. Of course, that didn't answer my worries in the least, and that's an ophth that I wouldn't recommend. Fortunately I was in a position where I was working with a neuroophthalmologist, who sat me down for a thorough exam, found the floaters under a slit lamp, told me that I have floaters, and described the exact shape of what I was seeing. Why did they start bothering me suddenly after a bad migraine, when they had been there for some time-- years, probably?? Who knows-- but that's a similar example to suddenly noticing normal double images. It doesn't mean I'm making things up, or a little off the wall, or anything like that. It just means that I suddenly noticed a chronic problem and it started to bother me.
So, if you feel that your doctors did a thorough exam for misalignments and didn't find any, you'd treat your situation very differently from a case where you don't think the ophthalmologists checked you very thoroughly for misalignments. If you think the latter is what happened, by all means start with another doctor. You might have to shell out a few bucks for a neuroophth visit, and the neuroophth might tell you exactly the same thing your other doctors did, but the patient education will be better and you'll probably feel better about your situation. The neuroopth, or even a second ophthalmologist, might be better at detecting subtle misalignments than the previous docs, and find something real. My own feeling is that if you're worried, find a doctor who's willing to explain it to you so you won't be worried. Certainly, if you can't drive, you have a very real problem--regardless of the cause.
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