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Medical Forum / General / Vision / July 2005Optometrist's numbers (moving to europe...)
Hi. I'm soon moving to Europe, and I have a question about my eyeglasses. I didn't find any more appropriate newsgroup, so I hope you can help me. My optometrist gave me a matrix which I cannot read, and since I need to translate it in italian... I don't know where to start... This is how it looks like: R | Sphere:plano | Cylinder:-0.50 | Axis:75 | Prism:(void) | VA:20 | 20 L | Sphere:-0.50 | Cylinder:Sphere | Axis:(void) | Prism:(void) | VA:20 | 20 PD:63 I hope to be not so OT here...  SignatureSensei <senseiwa@mac.com> cd /pub more beer > Hi. > [quoted text clipped - 13 lines] > > I hope to be not so OT here... This is the correct newsgroup. You do not need it translated to Italian. Any Italian optical shop (or any person in the optical business) knows exactly what it means. Same thing for 95% of other countries in the world. BTW, just for your own purposes, plano means clear lens without any power. >> R | Sphere:plano | Cylinder:-0.50 | Axis:75 | Prism:(void) | VA:20 | 20 >> >> L | Sphere:-0.50 | Cylinder:Sphere | Axis:(void) | Prism:(void) | VA:20 | 20 >> >> PD:63 > This is the correct newsgroup. > [quoted text clipped - 3 lines] > > BTW, just for your own purposes, plano means clear lens without any power. Thank you, I was afraid of using different units, like psi and pascal/bar. By the way, I don't understand, you say it has no power, does it mean it does not correct? I was told I had astigmatism on one eye and myopia on the other. If you have pointers to how to read those numbers, I'm curious... SignatureSensei <senseiwa@tin.it> cd /pub more beer >>> R | Sphere:plano | Cylinder:-0.50 | Axis:75 | Prism:(void) | VA:20 | 20 >>> [quoted text clipped - 18 lines] > the other. If you have pointers to how to read those numbers, I'm > curious... I'm not expert, but it sounds as if your prescsription is meant to correct astigmatism in your right and myopia in your left. But there's hardly any correction. Most people I know of with such a mild prescription don't wear glasses most of the time. > I'm not expert, but it sounds as if your prescsription is meant to > correct astigmatism in your right and myopia in your left. But there's > hardly any correction. Most people I know of with such a mild > prescription don't wear glasses most of the time. Yes, it's mild, but I see blurry, and I didn't know I could see better before going for an eye exam (I thought people could be better, not me seeing less). Anyway, my problems have always been with street signs, geometrical shapes (like letters)... It was a real surprise not having blurry vision anymore... SignatureSensei <senseiwa@mac.com> cd /pub more beer > Thank you, I was afraid of using different units, like psi and pascal/bar. > > By the way, I don't understand, you say it has no power, does it mean it > does not correct? I was told I had astigmatism on one eye and myopia on > the other. If you have pointers to how to read those numbers, I'm > curious... Everyone in the world uses the same units for eye exams and eyeglasses. Plano means no correction. Astigmatism has two measurements, Cylinder in diopters and Axis in degrees (0-180, NOT temperature). So your R lens has no diopter correction for Sphere, but has a correction for astigmatism (cylinder and axis). You L lens has a diopter correction for Sphere, but no correction for astigmatism. The PD (63) is pupil distance in millimeters, but many opticians will measure it again when you pick out a frame. Individual PD measurements (31.5/31.5) are preferred just in case you have an unequal distance between the center of your nose to your pupils. http://www.laramyk.com/learn/sphere_cylinder_and_axis.html > Everyone in the world uses the same units for eye exams and eyeglasses. > [quoted text clipped - 12 lines] > > http://www.laramyk.com/learn/sphere_cylinder_and_axis.html Thank you Mark! You've been really kind, now I understand at least something about my eyes :) SignatureSensei <senseiwa@tin.it> cd /pub more beer You don't need to wear any glasses at all. Don't ruin your vision. If you want to correct this little error of refraction, just use the Bates Method. More information here: www.seeing.org Stat. > Hi. > [quoted text clipped - 13 lines] > > I hope to be not so OT here... |
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