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Medical Forum / General / Vision / June 2006Seeing the edge of RGP's
I've had my RGP's for a week now. The discomfort is going away, but I'm still sort of seeing the edge of them in my peripheral vision. This effect comes and goes from blink to blink and over longer time periods, but I do find it kind of annyoing, kind of like tunnel vision almost. I have my follow-up visit in a few days, but maybe some of the experts could tell me what options are available to address this? Do lenses come in different sizes? I read something on-line about ones that are "much" bigger and sort of taper off - when do these become appropriate? Thanks. Two things come to mind right away. If you are seeing the edge all the way around, the lens is centering but is too small. On the other hand, if you are seeing it just at the bottom, the lens is riding too high and not centering well. In either case, they need to be refit so that they center well and clear the edge of your pupils. A lens that rides high or does not center may cause an undesireable change in your corneal shape. --Dr. Tom > I've had my RGP's for a week now. The discomfort is going away, but > I'm still sort of seeing the edge of them in my peripheral vision. [quoted text clipped - 9 lines] > > -- > I've had my RGP's for a week now. The discomfort is going away, but > I'm still sort of seeing the edge of them in my peripheral vision. [quoted text clipped - 5 lines] > that are "much" bigger and sort of taper off - when do these become > appropriate? OK. I'll go. You could be seeing either the edge of the lens or the central optical zone transition/junction. Either way, the lens is not staying centered over your pupil and the fit has to be changed. The solution depends upon the cause. Either the lens base curve and peripheral design needs to be altered, perhaps the lens needs to be larger or the optic zone larger. Or combinations of those things. Your practitioner can figure this out and you should have a better experience. LB, O.D. Thanks for the replies. I seem to notice the edge thing most often to the outside. If I look at my eye in the mirror though, the lenses seem to be hanging quite low - the center of the lens well below the black part of my eye. You'd think I'd see the top of the lens, but I don't. Should problems with fit be apparent to the doc by inspection, or does it rely on me providing a very accurate description of symptoms? I'm hoping the former, because the effects are somewhat difficult to describe. > > I've had my RGP's for a week now. The discomfort is going away, but > > I'm still sort of seeing the edge of them in my peripheral vision. [quoted text clipped - 19 lines] > > LB, O.D. >Thanks for the replies. I seem to notice the edge thing most often to >the outside. If I look at my eye in the mirror though, the lenses seem [quoted text clipped - 5 lines] >hoping the former, because the effects are somewhat difficult to >describe. I'm going to offer my $0.02 ... from a patient perspective: FIT is something that the optometrist evaluates given the exact conditions in their exam room ... at that exact moment. If, for example, your eyes were tearing a great deal in response to a new RGP lens, then the fit might be different *at that exact moment* than it would, say, two weeks later, when you've adapted to your new lenses and the tear level has returned to normal. My personal experience with RGP's was pretty similar to yours: the fit looked/seemed pretty good while I was at the doc's office, but seemed to "get sloppier" a few days later. A lens tweak (by the doc) here or there pretty much always resolved it. > Thanks for the replies. I seem to notice the edge thing most often to > the outside. If I look at my eye in the mirror though, the lenses seem [quoted text clipped - 5 lines] > hoping the former, because the effects are somewhat difficult to > describe. Yes, it should be apparent to the doc but feel free to fill him/her in with your symptoms. If the lens is fitting that low and is uncomfortable, I'd stop wearing it until you can be seen. When that time occurs, try to be wearing the lenses at least a hour so they're "settled in" and the doc can see the lenses fitting as they might outside the office situation. LB, O.D. > If the lens is fitting that low and is uncomfortable, I'd stop > wearing it until you can be seen. When that time occurs, try to be [quoted text clipped - 3 lines] > > LB, O.D. Actually,they're petty comfortable now, and they seem to be having some therapeutic effects. For one, I was having trouble with bloodshot eyes for a long time, and it seems to have completely gone away - like better than it's been for months. Also, my vision is better between wearings. I have a few pairs of glasses with less than my full prescription, and I see perfectly with them now. There seems to be some kind of retainer effect here that lasts at least 24 hours (the longest I've gone). The doc thought the lenses are fitting okay. He said they are low, but within tolerance, and trying to make them center would make them too tight so that they may rub at the edges and be less healthy (my paraphrase). As a result, he also doesn't want to go bigger because the bottom edges would end up too far down. So I need to live with the edge thing for now and see if it gets better over time (like maybe I just stop noticing, or maybe it'll be less obvious when I stop tearing so much). I was hoping to fine tune things, but I guess this is as good as it gets... > > Thanks for the replies. I seem to notice the edge thing most often > > to the outside. If I look at my eye in the mirror though, the [quoted text clipped - 17 lines] > > LB, O.D. > I've had my RGP's for a week now. The discomfort is > going away, but I'm still sort of seeing the edge of them [quoted text clipped - 7 lines] > "much" bigger and sort of taper off - when do these > become appropriate? My experience as a patient. I experienced the same effect as you when we started out. I could easily see the outside edges (maybe 1/5 or 1/6 of the circumference?). I noticed them prominently in my peripheral vision while looking straight ahead. It was expecially noticeable in sunlight and at night while driving -- like with car headlights *next* to you on the freeway. We went with the next step up in diameter. That worked. Very rarely am I aware of the outside edges now. I got the impression that there is more involved than just ordering the next larger size... -Quick >> I've had my RGP's for a week now. The discomfort is >> going away, but I'm still sort of seeing the edge of them [quoted text clipped - 21 lines] > > -Quick I should have mentioned they were always centered correctly. |
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