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Medical Forum / General / Vision / August 2007astigmatism and soft lenses question
I am wearing glasses for 10 years and now I would like to wear soft lenses. My eyeglass prescription is VOD sa -1.75 = sa -0.50 dcyl ax 170 = 0.7 - 0.8 TOD dig N kPa VOS sa -1.25 = sa -0.75 dcyl ax 0 = 0.7 - 0.8 TOS dig N kPa Problem is that I can't find toric soft lenses with -0.50 dcyl (the smallest is -0.75). My ophthalmologist gave me purevision soft lenses without cylinders, but I am not satisfied, because my vision with them is not perfect, I still have to squint while working on computer or watching TV. I would appreciate any advice Thank you in advance and excuse my English > I am wearing glasses for 10 years and now I would like to wear soft lenses. > [quoted text clipped - 13 lines] > > Thank you in advance and excuse my English ======================= there are no -0.50 cylinder toric lenses available. the smallest cylinder correction is -0.75 as you stated. I cannot understand for sure what your prescription is. what you listed above has some abbreviations and added numbers that are not used in the US (my location) and I am not familiar with (e.g. sa, 0.7 - 0.8). Please restate what your eyeglass prescription is, and what your contact prescription is. It is possible that your actual cylinder correction may be approx. -0.75 or even a little more. I would be interested in seeing your keratometry readings (corneal curvature or "K" readings). In my practice if I had a patient who still complained of slight distance blur I would trial them in toric lenses, and maybe some slightly overminused powers using a lens with aspheric design. >> I am wearing glasses for 10 years and now I would like to wear soft >> lenses. [quoted text clipped - 25 lines] > used in the US (my location) and I am not familiar with (e.g. sa, 0.7 > - 0.8). My location is Croatia, but I tought that that is latin. Please restate what your eyeglass prescription is, and what > your contact prescription is. That is the only prescription that I have and it should be valid for both (glasses and contacts). > It is possible that your actual cylinder correction may be approx. > -0.75 or even a little more. I would be interested in seeing your > keratometry readings (corneal curvature or "K" readings). In my > practice if I had a patient who still complained of slight distance > blur I would trial them in toric lenses, and maybe some slightly > overminused powers using a lens with aspheric design. I don't have keratometry readings (I don't know what is it). Should my opthamologist measure it or? Thank you > I am wearing glasses for 10 years and now I would like to wear soft lenses. > [quoted text clipped - 13 lines] > > Thank you in advance and excuse my English the left eye has .75 cyl (apparently) so why not try a toric? >> I am wearing glasses for 10 years and now I would like to wear soft >> lenses. [quoted text clipped - 17 lines] > > the left eye has .75 cyl (apparently) so why not try a toric? To try toric for left eye and normal for right eye or? > >> I am wearing glasses for 10 years and now I would like to wear soft > >> lenses. [quoted text clipped - 19 lines] > > > To try toric for left eye and normal for right eye or? Yes, or toric for both. If you need -.50, then I would think that -.75 would be closer than zero. ODs like to fit non-toric lenses, when they work. They are easier to fit, both for the patient and the doctor. Also, some patients balk at the cost of torics, which are several times more expensive. Also, if these work for distance, you may be at that age where you need different correction for close. I wore over the counter reading glasses over my contacts for close work. The above is based on my experience as a patient with somewhat similar problems. Although it is a good idea to find out as much as possible from everybody (at least that is what I think), your doctor should be your final authority. > >> I am wearing glasses for 10 years and now I would like to wear soft > >> lenses. [quoted text clipped - 19 lines] > > To try toric for left eye and normal for right eye or? its OK to try torics in both or either eye. you have a small amount of astigmatism so torics might help your acuity a little bit but not very much. i would suspect you could readily read 20/20 with just spherical lenses. trying a toric lens would not hurt you in any way. |
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