3 Glasses Exercise Eye Care Pinhole Pin Hole Vision Improve Eyewear Eyesight

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Seller: Top-Rated Plus Seller get-the-deal (8,714) 99.7%, Location: Troy, North Carolina, Ships to: US & many other countries, Item: 164209184274 This listing is for 3 pairs of Pinhole Glasses for Improving Vision and Reducing Eye StrainFeatures: It is now widely accepted that small hole glasses do improve vision for suffering with refractive error eye disorders. Even ophthalmologists use small hole equipment to check eyes for refractive disorder. Also known as stenopeic glasses, these eyeglasses have a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the retina and increases depth of field In eyes with refractive error, the resulting image becomes sharper. However, a second effect may appear at the common bridge between each two adjacent holes, whereby two different rays of light coming from the same object (but each passing through a different hole) are diffracted back toward the eye and onto different places on the retina. Frequent substitution of prescription glasses (TV, computer, reading) with pin-hole glasses such as these will typically result in improved vision.Specifications: Material: Resin Color: Black Item Length: 14cm / 5.51in Lens Length: 6cm / 2.36in Lens Width: 4cm / 1.57in Temple Length: 11.5cm / 4.53in Bridge Width: 3cm / 1.18in Item Weight: 24g / 0.84oz Package Size: 24.5 * 8 * 4cm / 9.65 * 3.15 * 1.57in Package Weight: 26g / 0.91oz

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