Monday, June 16, 2008

News about pinhole eyeglasses


Pinhole eyeglasses are another nontraditional method of vision correction. The glasses consist of a frame with non-prescription opaque lenses that have a pattern of many small (approx. 1 mm) holes (or "pinholes") for the wearer to see through. The pinhole glasses can produce a reasonably clear image on the retina by allowing only a small portion of light rays that are reflected from an object to pass through small points on the lens. This eliminates most of the light rays that would remain unfocused by an eye that is nearsighted, farsighted, or has astigmatism.

Those who accept benefited from pin-hole spectacles are, added generally than not, humans who abrasion the wrong eyeglasses. Naturally, replacing these with pin-hole glasses will accomplish them see well.

Some companies advertise pinhole glasses, commercial them as phenomenon treatments or a "natural" another to accepted glasses. Unfortunately, admitting pinhole glasses can provides some advance in anatomic vision, they cannot about-face nearsightedness, farsightedness, or astigmatism. And because they acutely bind borderline vision, pinhole glasses should never be beat for driving.

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