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2. Lensmeter - Wikipedia

   en.wikipedia.org/wiki/Lensmeter

   13 – Prism scale knob. A lensmeter or lensometer (sometimes even known as focimeter or vertometer), [1][2] is an optical instrument used in ophthalmology. It is mainly used by optometrists and opticians to measure the back or front vertex power of a spectacle lens and verify the correct prescription in a pair of eyeglasses, to properly orient ...

3. Eyeglass prescription - Wikipedia

   en.wikipedia.org/wiki/Eyeglass_prescription

   Eyeglass prescription. Using a phoropter to determine a prescription for eyeglasses. 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.

4. 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]

5. Phoropter - Wikipedia

   en.wikipedia.org/wiki/Phoropter

   Phoroptor is a registered trademark currently owned by Reichert Technologies, filed Apr 25, 1921, by DeZeng Standard of New Jersey, with the USPTO, serial number 71146698. The word was coined at that time for the newest version of their phoro-optometer. DeZeng was purchased in 1925 by American Optical of Massachusetts, which continued to market ...

6. The Walmart Prime Day deals are still going strong: Here's ...

   www.aol.com/lifestyle/the-walmart-prime-day...

   Katelyn Mullen and Kristine Gill. July 17, 2024 at 12:04 PM. The Walmart Prime Day deals are still going strong: Here's what to shop during the rival sale. We're deep into day two of Prime Day and ...

7. 10 can't-miss Walmart deals you need to shop this week - AOL

   www.aol.com/lifestyle/10-cant-miss-walmart-deals...

   Bissell Little Green Portable Carpet Cleaner. $88 $124 Save $36. At under 10 pounds, the Little Green is lightweight and easy to carry, yet still handles messes like a full-size machine. Its small ...

8. Prism cover test - Wikipedia

   en.wikipedia.org/wiki/Prism_Cover_Test

   measuring strabismus. The prism cover test (PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]

9. Eye examination - Wikipedia

   en.wikipedia.org/wiki/Eye_examination

   29271-4. An eye examination, commonly known as an eye test, [1] is a series of tests performed to assess vision and ability to focus on and discern objects. It also includes other tests and examinations pertaining to the eyes. Eye examinations are primarily performed by an optometrist, ophthalmologist, or an orthoptist.