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Ready-made single-vision reading glasses go by many names, including over-the-counter glasses, ready readers, cheaters, magnifiers, non-prescription readers, or generic readers. They are designed to lessen the focusing burden of near work, such as reading.
Reading stone in Archeon, a historical theme park. A reading stone is an approximately hemispherical lens that can be placed on top of text to magnify the letters so that people with presbyopia can read it more easily. Reading stones were among the earliest common uses of lenses.
The eye can then be a larger distance away, and a good image can be obtained very easily; the focus is not very sensitive to the eye's exact position. The magnifying power in this case is roughly MP = (0.25 m)Φ. A typical magnifying glass might have a focal length of 25 cm, corresponding to an optical power of 4 dioptres. Such a magnifier ...
Whether your ideal time outside revolves around reading a book in the park or sitting at a café with a spritz in hand, your eyes will appreciate a break from all that bright sunshine ...
Today, sunglasses are not only practical and healthy for your eyes — if they offer 100% UVA and UVB protection — they’re also a fashion statement and, in some cases, an incredible luxury.
The glasses have a projector, and the image is returned to the eye by a reflective surface. Lastly, there is a technique more popular with hobbyists due to its low cost which requires using a magnifying lens to focus the screen onto the eye.
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601 N High Street,, Columbus, OH · Directions · (614) 745-8101First great made-on-the-internet brand. - Fast Company