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Porter D. What is prism correction in eyeglasses? If your prescription does not include a PD, please leave it at 62 for single vision & progressives. a big difference in your observing experience! If there is something on your prescription that isn't covered here, please call us at 1-800-211-2105. Depending on your age and medical background, your eyes and vision may be changing rapidly, and you may need an updated prescription even after a year. If those two numbers are the same, you are in luck and you can skip to the section entitled Adjusting the Strength of Reading Glasses for Your Working Distance. How to Read Your Eyeglass Prescription - AC Lens One tip to help getting accustomed to Progressive lenses is to make a conscious effort to move your head instead of only moving your eyes. Several functions may not work. Can I wear reading glasses while wearing contact lenses? Progressives have a seamless, invisible design where the power progressively changes throughout the lens. Opticians routinely convert distance lens powers to eyewear designed for near or intermediate work. That is the way my eyes are now. In the above example, for the right eye, this would be -2.00 and +1.75, which equals -0.25. This week we cover the steps of converting a distance eyeglass prescription with a given add power to a single vision intermediate pair, ideal for computer use or office work. Apart from convenience for reading, would my eyes adapt fine to going back and forth between progressive and regular lenses? A plus sign in front of the number means you are farsighted, and a minus sign means you are nearsighted. A progressive lens is a general purpose lens. Thank you, {{form.email}}, for signing up. While looking straight ahead, open the right eye, close the left one . If you are an individual who experiences sustained eye issues, you may have developed some habits and workarounds to make life easier. My prescription is a bit confusing, hope you can help. For example, if the prescription is O.D.Sphere +2.00, Cylinder -0.50, Axis 180 with a reading ADD of -1.00, during conversion you disregard the cylinder and axis until later.