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Medical Forum / General / Vision / June 2006Cataract Surgery and Choice of Focal Distance
I'll have a surgery in my only good eye in a month. Before going over the details w/ my doc, I just want to know if my thinking makes sense. 1. I want the monofocal distance to be around 8-9 inches because that has been my comfortable reading distance (I need to read manuscripts whose print is usually small, so I read without my glasses). The near vision is the most important for me. 2. Then, I can have a pair of glasses to give me a good focus at 16 inches for my computer work. 3. Finally, I can have a stronger pair of glasses (maybe bifocal) to give me a good far vision for driving, etc. Does it make sense, or does anyone have a better idea? > I'll have a surgery in my only good eye in a month. Before going over the > details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 9 lines] > > Does it make sense, or does anyone have a better idea? If you are currently reading at 8-9 inches and using separate computer glasses etc and are happy with the set up, then ask for it. The other option would be to have the eye set for 16 inches and use glasses to read fine manuscripts. You may well find that with the improved contrast and best corrected acuity after surgery that you will be able to read the manuscripts at 16 inches and will not need reading glasses. Dr Judy >>I'll have a surgery in my only good eye in a month. Before going over the >>details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 18 lines] > > Dr Judy I agree with that idea. JJ is probably reading at 8 or 9 inches out of necessity due to the cataract. Once that's gone, he/she should be able to relax out to the more normal 16-18 inches and be comfy. w.stacy, o.d. >>>I'll have a surgery in my only good eye in a month. Before going over the >>>details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 28 lines] > > w.stacy, o.d. Thank both of you for good suggestions. I had always read at 8-9 inches even before cataract severaly interfered with my vision. Maybe I loved clear and detailed close-up vision that my myopia gave me :-) Provided that my vision is clearly focused at 16 inches after the surgery, will reading glasses give me clear and focused close-up vision? I'm certainly intrigued by your suggestions because dealing with "small reading glasses" should be much easier than dealing with "glasses for intermediate vision". >Thank both of you for good suggestions. I had always read at 8-9 inches even >before cataract severaly interfered with my vision. Maybe I loved clear and >detailed close-up vision that my myopia gave me :-) Well it's not common, but if you're happy with it, you can certainly request it. The surgeon might balk at inducing so much myopia on purpose. > Provided that my vision >is clearly focused at 16 inches after the surgery, will reading glasses give >me clear and focused close-up vision? Yes. you would need about a +1.50 lens to get you to 8 inches if you end up being about a -2.00 myope, which is what I'd recommend. You would need approximately a -2.00 for distance vision. >I'm certainly intrigued by your >suggestions because dealing with "small reading glasses" should be much >easier than dealing with "glasses for intermediate vision". > Alternatively you might want to consider: 1. Go for best distance vision and either wear a trifocal or a progressive for the 16" and 8" distances. In this scenario the distance Rx would be near zero and probably optional, so instead you could just get a pair of +2.00 for 16" and +4.00 for 8 inches, or you could make them bifocals with the upper for 16" and the lower for 8". But since you only have one good eye, you probably should wear glasses all the time (with Trivex lenses) for protection, esp. when driving or doing anything where you might receive an impact. w.stacy, o.d. > I'll have a surgery in my only good eye in a month. Before going over the > details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 9 lines] > > Does it make sense, or does anyone have a better idea? You might also consider that your needs may conceivably change, and such an arrangement may prove to be inconvenient in the future. Also, you might need to consider just how much anisometropia you will wind up with and how that might affect your binocularity with eyeglasses. DrG > ... you might need to consider just how much anisometropia you will wind up > with and how that might affect your binocularity with eyeglasses. Anisometropia? Is it fatal? Well, the OP could also wind up with some astigmatism. Dumb luck or surgeon skill could get her to where I am: ~ 1.0 Diopter nearsighted in each eye, including quite minor astigmatism. Bad luck could get you more astigmatism as well as anisometropia. I am not an eyecare professional, but I can tell you this: It is very nice to be able to see most things without eyeglasses, and to be able to use Walgreens readers for close-up. (Still need glasses for night driving, though.) Over a diopter of astigmatism in one eye was mostly resolved -- the other eye had very little to start with. I was not told in advance if the astigmatism could be corrected, only that it would be less. Otherwise I was told practically nothing, and given no opportunity to make any choice about working distance. The surgeon has a very good reputation in my locale, but not for communication. If I had been given an opportunity to choose, I would have chosen reading distance. I think that would have been the wrong choice. As it is, I can see my computer screen and everything on my desk with cheap reading glasses (happen to be Zenni's, but Walgreens+1.25 are almost as good). I can see everything else in the room quite clearly by looking over the glasses, which are small, and slide down the nose. For really close work, like watch repair, I have got a lit magnifier on a stand attached to the desk. -- Dicky PKA Dicky Magooeyes Have you ever considered therapy, Dick? DrG > > ... you might need to consider just how much anisometropia you will wind up > > with and how that might affect your binocularity with eyeglasses. [quoted text clipped - 30 lines] > Dicky > PKA Dicky Magooeyes > > > ... you might need to consider just how much anisometropia you will wind up > > > with and how that might affect your binocularity with eyeglasses. > > Anisometropia? Is it fatal? > Have you ever considered therapy, Dick? Maybe I should start with a portable medical dictionary. Then if some professional person threatens me with anisometropia, I could avoid having a panic attack. -- Dicky > Maybe I should start with a portable medical dictionary. Then if some professional > person threatens me with anisometropia, I could avoid having a panic attack. you found sci.med.vision, so you must know how to google, but if not, click on http://www.google.com and carefully enter in the search box the following: definition anisometropia and see what happens w.stacy, o.d. > > Maybe I should start with a portable medical dictionary. Then if some professional > > person threatens me with anisometropia, I could avoid having a panic attack. [quoted text clipped - 8 lines] > > w.stacy, o.d. Anybody looking for answers in a sci.med.vision news group ought to expect to encounter some medical and visual science jargon. If I encounter an unfamiliar term, I would prefer to look it up rather than embarrass myself. The term anisometropia has been used here countless times. DrG DrG > > I'll have a surgery in my only good eye in a month. Before going over the > > details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 14 lines] > you might need to consider just how much anisometropia you will wind up > with and how that might affect your binocularity with eyeglasses. He has already stated he only has one good eye, do anisometropia and binocularity is not an issue. Dr Judy > DrG > He has already stated he only has one good eye, do anisometropia and > binocularity is not an issue. > > Dr Judy You're right. But it still applies to all of you binocular/biocular people out there. > > He has already stated he only has one good eye ... She's right, Leuko. So much for anisometropia and binocularity. You folks get so wrapped up in your fancy nomenclature that you lose track and come unstrung. -- Dicky > > > He has already stated he only has one good eye ... > [quoted text clipped - 7 lines] > -- > Dicky Dicky, didn't your mother teach you how to behave? Here you are, a senior citizen, acting like a two year-old. You and Otis, birds of a feather. DrG > I'll have a surgery in my only good eye in a month. Before going over the > details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 9 lines] > > Does it make sense, or does anyone have a better idea? Post-operative refraction may not be exactly what you expect it to be, judging from my experience. So you might have to cope with such a situation. I'm about -1D and can cope with most situations without glasses.  SignatureRobert T. Kopp http://analytic.tripod.com > I'll have a surgery in my only good eye in a month. Before going over the > details w/ my doc, I just want to know if my thinking makes sense. [quoted text clipped - 9 lines] > > Does it make sense, or does anyone have a better idea? Realize your asking for -4 to -5 diopters of myopia. This is how bad my eyes are naturally and im not happy with this much myopia. Yes I can read easily at 8 inches but things get blurry in a hurry past a foot. I cant even read the computer monitor without a thin pair of minus glasses and this is no fun! I need glasses for everything except eating and reading up close. As others have suggested, you are much, much better off asking to be -2 to -2.5 instead. This will let you see the computer monitor without correction AND let you read everything except tiny/fine print. You will be much, much less dependant on any kind of glasses at -2.5 than -5. Not only that, your distance vision wont be so poor. -5 is very poor distance vision(worse than 20/400), you will feel handicapped or functionally blind without distance glasses but at -2.5 youll still be quite functional(better than 20/200). If I could chose how myopic I wanted to be, I would NOT want to be more than -2.5 myself. |
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