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  2. Pinhole occluder - Wikipedia

    en.wikipedia.org/wiki/Pinhole_occluder

    A pinhole occluder is an opaque disk with one or more small holes through it, used by ophthalmologists, orthoptists and optometrists to test visual acuity. The occluder is a simple way to focus light, as in a pinhole camera, temporarily removing the effects of refractive errors such as myopia. Because light passes only through the center of the ...

  3. Pinhole glasses - Wikipedia

    en.wikipedia.org/wiki/Pinhole_glasses

    Pinhole glasses, also known as stenopeic glasses, are eyeglasses with 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 ...

  4. Subjective refraction - Wikipedia

    en.wikipedia.org/wiki/Subjective_refraction

    An occluder is placed over the eye that is not being tested (e.g.: over the left eye, to test the right eye's vision). A pinhole occluder is then placed before the patient's eye, and their vision is then tested again (each eye separately) to determine if the patient's poor visual acuity is a result of optical irregularities, or pathological issues.

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    Liquid I.V. is formulated with eight vitamins and nutrients, from vitamin C to vitamin B12, that nearly 245,000 Amazon reviewers swear by to stay hydrated. $21 at Walmart HP

  6. Get free eclipse glasses, make pinhole eclipse viewers

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    To prepare for April 8's solar eclipse, Monroe County residents can get free solar viewing glasses and make pinhole shadow box viewers ... You can get TurboTax for 30% off on Amazon today. AOL.

  7. These Stylish, Doctor-Approved Reading Glasses Can Help ... - AOL

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    Esme Glasses. These fashionable glasses from Warby Parker come in three different width options—narrow, medium, and wide—to ensure the best fit for any face shape and size.

  8. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    Pinhole see Pinhole occluder and Visual_acuity#Legal_definitions: PHNI Pinhole No Improvement see Pinhole occluder and Visual_acuity#Legal_definitions: PHVA Pinhole Visual Acuity: PL Perception of light POH / PrOH Previous ocular history PPA Peri-papillary atrophy Pt Patient RAPD Relative afferent pupillary defect OD Right eye (oculus dexter) Ret.

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