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Medical Forum / General / Vision / July 2006Odd New Astigmatism Lens
Hello there - I'm having problems with a new lens I prescribed, and was wondering in anyone had any input. I noticed I was having a blurring effect out of my right eye, so I went for a check-up and the optometrist ended up with a prescription that was almost the same as my previous: Previous: -2.25 in both eyes New: -2.25 in the left, -2.00, -0.50 180 in the right As soon as I put these glasses on, I felt odd. There was a strong pulling sensation in right eye, and I could never really seem to focus it. After a week I went back, and the optometrist said that people often take awhile to get used to an astigmatism correction, and I should wait longer and eventually my eye would feel normal. However, it's now been almost 2 months, and while I no longer feel the pulling, my right even never seems to really be in focus, and I find it hard to read anything (at any distance). It's almost like there's no contrast between foreground and background, so words just smear. However, if I close my left eye, the problem almost totally disappears. I've had the lens placement checked and rechecked, as well as the lenses, and everytime everything checks out fine - the lenses are the correct prescription, and they are centered right over my pupils. Is it usual to take THIS long to get used to a new lens? How much do you wear this prescription? All/some of the time? That may be a clue. > How much do you wear this prescription? All/some of the time? That may be a > clue. > > -- > Message posted via http://www.medkb.com I wear my glasses all of the time, both old and new prescription. > How much do you wear this prescription? All/some of the time? That may be a > clue. > > -- > Message posted via http://www.medkb.com I wear my new prescription all of the time, as I did with my old prescription. > > How much do you wear this prescription? All/some of the time? That may be a > > clue. [quoted text clipped - 4 lines] > I wear my new prescription all of the time, as I did with my old > prescription. I also couldnt get used to astigmatic correction in the right eye. Fortunately the cylindar is only about -1 to -1.5 so a small bump in the sphere worked pretty well. If I had large cylindar and couldnt get used to glasses, id be trying RGP contacts and as a last resort, AK, PRK, limbal relaxation, etc to surgically do away with my cylindar. Its not without risks 2 months is plenty of time to get used to a 0.50cyl change. Just to confirm: you say the *right* eye never seems to be in focus with your new glasses, but if you close your *left* eye the problem disappears? In other words closing your left eye puts your right eye back in focus? Are the new glasses made of polycarbonate material? Do colours appear washed out with your right eye? Does print look black or more grey with the right eye (compared with the left eye)? Assuming your lenses aren't made of polycarbonate: you could have a problem with your retina, or you could even have dry eye. Or the optometrist could have just made a mistake with your eye test. Dom > Hello there - I'm having problems with a new lens I prescribed, and was > wondering in anyone had any input. I noticed I was having a blurring [quoted text clipped - 20 lines] > > Is it usual to take THIS long to get used to a new lens? Thanks for everyone's suggestions on what my problem might be. Yes, Dom, the astigmatism and problem I'm having is in my right eye, and if I close my left, the problem seems to go away. I'm almost wondering if I'm having almost a prism effect, and getting two images that are close, but not aligned perfectly. It almost feels as if my right eye is always accomodating for far vision, no matter where I'm looking. My new lenses are polycarbonate right now, although I first had them as plastic, and they tried changing them to polycarbonate to see if it helped. I liked the plastic a little better, but there wasn't much difference to me. Colors seem to be the same in both eyes, and print looks the same with both eyes individually - it's just when I'm looking at them with both eyes that I really notice it. Oddly, I find that if I'm in a car, or behind another glass of some sort, the feeling goes away. Could I be having a problem adjusting to a larger amount of light coming through my lens? My old lenses were a little scratched up before I replaced them. - Jason > 2 months is plenty of time to get used to a 0.50cyl change. > [quoted text clipped - 38 lines] > > > > Is it usual to take THIS long to get used to a new lens? Well I'm really only guessing now... maybe your previous specs did have a small amount of prism which wasn't replicated in your new pair but should have been? If you are finding that you are not reading as smoothly, or losing your place when reading, with the new pair, then the prism may be a factor. As I say, just guessing now. I'd book in for another test with your optometrist. Remaking the lens without the cylinder (the -0.50 component of your Rx) and in a standard optical plastic (i.e. CR39 not polycarbonate) would be a simple thing to try. Dom > Thanks for everyone's suggestions on what my problem might be. > [quoted text clipped - 63 lines] >>> >>> Is it usual to take THIS long to get used to a new lens? > Hello there - I'm having problems with a new lens I prescribed, and was > wondering in anyone had any input. I noticed I was having a blurring [quoted text clipped - 20 lines] > > Is it usual to take THIS long to get used to a new lens? Do I have this straight? With both eyes open, i.e. binocularly, your right eye seems out-of-focus. But, with your LEFT eye closed, the right eye clears up? Sounds like the left eye might be slightly over-minused and accommodating to it is throwing your right eye into myopia. DrG > Do I have this straight? With both eyes open, i.e. binocularly, your > right eye seems out-of-focus. But, with your LEFT eye closed, the [quoted text clipped - 4 lines] > > DrG It's possible, but I've worn the -2.25 in the left eye for the past 6 years, without a problem. My previous prescription (-2.25 in both eyes) worked quite well, up until about half a year ago when I noticed a little bit of blurring while reading at mid-range. Dom: I thought of the prism as well, but my optometrist did test for whether I needed it. My face is a little lopsided, but not enough to make a difference (accoriding to both the optometrist and my optician). Once again, thanks for all your help, any advice is something to try. > > Do I have this straight? With both eyes open, i.e. binocularly, your > > right eye seems out-of-focus. But, with your LEFT eye closed, the [quoted text clipped - 9 lines] > eyes) worked quite well, up until about half a year ago when I noticed > a little bit of blurring while reading at mid-range. Eyes change and so do prescriptions. If the situation is as I described, then you have to be accommodating. DrG |
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