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Medical Forum / General / Vision / March 2005rapid prescription change?
My partner, who does not normally need glasses, recently went for an eyetest and was told that she *does* now need glasses and was given a prescription as follows: Right: -0.25 sph, -0.75 cyl (axis 178) Left: -1.00 sph, 0.00 cyl The practitioner told her that her eyes may be "in spasm" and that within 4 weeks she would probably loose her astigmatism in the right eye, and would have her left eye reduce from 1.00 sph down to 0.50 sph. He said that she should purchase spectacles and come back in one month for a retest. She is confused about this "prediction" that her eyes would recover in such a short time, and if this *were* the case then surely the practitioner would not recommend that she spend money on spectacles (which let's face it are not exactly cheap!) which would not be needed in only a month from now! (Her age is 26) Finally does anyone know what the "++" bit means on the "distance acuity" box: Right: 6/5 Left: 6/6++ This would seem to indicate that she can see slightly better with her right eye than her left eye, but I have never seen "++" symbols on any of my own prescriptions. The ++ means that she can see two extra letters on the line that is lower than 6/6 on the chart. In other words, almost 6/5. That means her corrected acuity is very good. I am not sure why she would be suspected as having a spasm causing her myopia and astigmatism. With that low of a prescription, I would go a while without any glasses and see if the prescription stayed the same. If so, I would then get the specs. As you say, glasses aren't cheap. Is she taking any medicines? Does her blood sugar fluctuate? Such things can cause transient eyeglass prescription changes. > The ++ means that she can see two extra letters on the line that is > lower than 6/6 on the chart. In other words, almost 6/5. That means [quoted text clipped - 7 lines] > Is she taking any medicines? Does her blood sugar fluctuate? Such > things can cause transient eyeglass prescription changes. Only medicines like an inhaler which he says does not affect vision. It seems he said that having the corrective lenses should help her eyes to recover. I can see that seeing things in better focus *could* possibly help prevent eyestrain, but I have never heard of glases actually helping eyes to "cure" themselves! She says that she has noticed some slightly blurred vision for quite a while, which would seem to imply that this is not just a temporary refractive error in her eyes, so I'd be quite surprised if she goes back and finds she gets a much weaker prescription in a month's time. > My partner, who does not normally need glasses, recently went for an eyetest > and was told that she *does* now need glasses and was given a prescription > as follows: > > Right: -0.25 sph, -0.75 cyl (axis 178) > Left: -1.00 sph, 0.00 cyl These numbers are just rubbish inventions of your practitioner. > The practitioner told her that her eyes may be "in spasm" and that within 4 > weeks she would probably loose her astigmatism in the right eye, and would > have her left eye reduce from 1.00 sph down to 0.50 sph. "May be". Again these people know nothing and pretend to know. > He said that she should purchase spectacles and come back in one month for a > retest. Yes, you go and purchase the glasses, so the spasm becomes stuck and the cure becomes more difficult. He has acquired a new client, and the story goes on. > She is confused about this "prediction" that her eyes would recover in such > a short time, and if this *were* the case then surely the practitioner would > not recommend that she spend money on spectacles (which let's face it are > not exactly cheap!) which would not be needed in only a month from now! AH!!! > (Her age is 26) > Finally does anyone know what the "++" bit means on the "distance acuity" > box: [quoted text clipped - 5 lines] > eye than her left eye, but I have never seen "++" symbols on any of my own > prescriptions. What proof do you want more to understand that this is only a dirty game played on the heads of the gullible? Don't be gullible. Go to the true source of perfect sight without glasses. Read Dr. Bates book. http://TheCentralFixation.com > My partner, who does not normally need glasses, recently went for an > eyetest and was told that she *does* now need glasses and was given a > prescription as follows: > > Right: -0.25 sph, -0.75 cyl (axis 178) > Left: -1.00 sph, 0.00 cyl You did speak about an eyetest, did you mean a refraction measurement at which your partner has to give answers on questions or just a simple autorefractor test? A autorefractortest (computer) without the need to say anything is never used as an accurate prescription under normal conditions. It indicates, nothing more nothing less. Your partner having the age of 26 easily can influence this instrument by accommodating. If the above is the case then have a real refraction measurement.  SignatureJan (normally Dutch spoken) >> My partner, who does not normally need glasses, recently went for an >> eyetest and was told that she *does* now need glasses and was given a [quoted text clipped - 13 lines] > > If the above is the case then have a real refraction measurement. They use the autorefractor (as well as the field of vision and dreaded puff of air tests) a few minutes before the "real" test with the snellen charts. I doubt they would legally be allowed to use an autorefrator to prescribe glasses, as they say it's only to provide the practitioner with a "starting" point to get the exact prescription using a traditional box of lenses and a chart! > You did speak about an eyetest, did you mean a refraction measurement at > which your partner has to give answers on questions or just a simple > autorefractor test? > A autorefractortest (computer) without the need to say anything is never > used as an accurate prescription under normal conditions. These people are strange. First they hanker for great OBJECTIVE study of the length of the eye, THEN THEY DO NOT TRUST THEIR OWN INSTRUMENTS, and proceed with SUBJECTIVE TESTS. > It indicates, nothing more nothing less. Good to know. This simply brings the conclusion that refraction changes continuously when you test the patient under different conditions. > Your partner having the age of 26 easily can influence this instrument by > accommodating. > > If the above is the case then have a real refraction measurement. And the problem remains unsolved. |
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