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  2. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient. If an eye examination indicates that corrective lenses are appropriate, the prescriber generally ...

  3. Glasses - Wikipedia

    en.wikipedia.org/wiki/Glasses

    Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears. Glasses are typically used for vision correction, such as with ...

  4. New Eyes for the Needy - Wikipedia

    en.wikipedia.org/wiki/New_eyes_for_the_needy

    In 1968, the organization paid off its mortgage. By 1979, over 100,000 pairs of eyeglasses were being shipped overseas. $150,000 in grants were allocated to hospitals and medical schools. New Eyes broke the 1,000,000 mark in eyeglass donations for one year, which allowed for the purchase of over 10,000 new prescription glasses. 1980s and 1990s

  5. Pupillary distance - Wikipedia

    en.wikipedia.org/wiki/Pupillary_distance

    For people who need to wear prescription glasses, consideration of monocular PD measurement by an optician helps to ensure that the lenses will be located in the optimum position. [6] Whilst PD is an optometric term used to specify prescription eyewear, IPD is more critical for the design of binocular viewing systems, where both eye pupils need ...

  6. Autorefractor - Wikipedia

    en.wikipedia.org/wiki/Autorefractor

    This feedback refines the prescription to one which provides the patient with the best vision. Automated refraction is particularly useful when dealing with non-communicative people such as young children or those with disabilities.

  7. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Reading glasses are single vision lenses designed for near work and include over the counter glasses. They come in two main styles: full frames, in which the entire lens is made in the reading prescription, and half-eyes, style glasses that sit lower down on the nose.

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