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Scientific Principle: Focal power is inversely related to focal length- which means when your reading material is further away you need less lens power to read it clearly and as you move your reading material closer you will need more lens power for it to be clear.
If you want to use your reading glasses at your computer - first, find your correct lens power at traditional reading distance. Then reduce that lens strength by about half and tweak in consideration of the distance of your digital device to your eyes. Read chart at traditional reading distance of inches. The first line you have difficulty reading is your suggested lens strength at that distance. For computer reading reduce that strength by about half. The world's thinnest reading glasses with a case that attaches to your phone, or put in your pocket or purse.
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We can make your reading glasses with the same or different powers. Follow the instructions for determining Up- Close Vision above. Make sure you hold the chart at inches away and no further. Once you have determined your reading glasses strength, use the chart below to determine your computer distance strength. NOTE; The computer strength powers listed are for screen distances of arm's length approx 18 inches. If your screen is closer than arm's length you can opt for the next step higher power.
BTW, see tip 2 above. However, there is no substitute for an eye exam from an Optometrist or Ophthalmologist. You may require a correction for astigmatism for example Steve has over 30 years experience in the optical field. Select your preferences to shop a personalized collection of styles. Any Gender Men's Women's. Shop by Power. Best-Selling Reading Glasses. The Sophie. The Beatrix. The Lorelai Bifocal. The Brit.
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