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2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

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

   www.aol.com/best-doctor-approved-reading-glasses...

   In fact, as many as 34.5 million Americans wear over-the-counter reading glasses, according to the Vision Council. Luckily, reading glasses are easy to get practically anywhere—and they come in ...

4. Eyeglass prescription - Wikipedia

   en.wikipedia.org/wiki/Eyeglass_prescription

   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 ...

5. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia.

6. Esotropia - Wikipedia

   en.wikipedia.org/wiki/Esotropia

   Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...

7. Eye care professional - Wikipedia

   en.wikipedia.org/wiki/Eye_care_professional

   Optometrist. Optometrists are healthcare professionals with a degree in eye care, specifically. In the United States and Canada, they are Doctors of Optometry (O.D.) - this includes optical, medical and some surgical eye care. Their training typically includes four years of college followed by four years of eye specific training (Optometry school).