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(actual honesty) Sharing the view with others becomes immediately problematic. Again, I need the glasses to see the sky clearly and to read. It won't help me look at the sky without the telescope and it won't help me read. Sample: OD: +0.50 -0.25 165 In order to find the correct strength of your reading glasses, you have to add the ADD number and the SPHERE number together for each eye. Add the power of just the Sphere, or distance in the right eye. For example, the word "power" is sometimes written as "PWR." Opticians routinely convert distance lens powers to eyewear designed for near or intermediate work. PD 64. What Do the Abbreviations on Your Prescription Mean? I am confused by the value of Sph for Cyl for left eye and no value for Axis. When you leave your eye doctors office and look at your prescription, it may seem like an unrecognizable series of numbers and abbreviations. I'd rather just leave them on as much as possible. is now +3.00 Cylinder -0.50 and Axis 180. Several functions may not work. Get high-quality and affordable RX safety glasses and best prescription safety glasses online for eye safety. Repeat with the left eye, or O.S. The PAL number will apply to both eyes. Keeping track of multiple sets of glasses can be, frankly, a pain. Add the reading prescription power to the left distance power and keep the Cylinder and Axis the same. 3 Different Types Of Prescription Lead Glasses - Universal Medical Inc If your prescription does not include a PD, please leave it at 62 for single vision & progressives. Sometimes, specific situations are taken into consideration when converting a bifocal prescription to reading or single glasses. Our vision changes as we age, requiring many people over 40 to need different glasses for reading and seeing distance. Although your contact lens and glasses prescription may look similar, it does not mean they will give you the same visual acuity if you try to convert one to the other. For people who have astigmatism, there will be three numbers in your prescription. This is done by rewriting the prescription as a single vision order. The general form for writing these numbers is S x C x Axis. Read Also: Jean Paul Gaultier Vintage Sunglasses, Glasses prescriptionContact lens prescription. What Do Prescription Numbers Mean in Eye Glasses?