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  2. Ophthalmic trial frame - Wikipedia

    en.wikipedia.org/wiki/Ophthalmic_trial_frame

    A trial frame is a tool used by ophthalmic professionals like ophthalmologists and optometrists. It is basically an adjustable spectacle frame with multiple cells, used to hold corrective lenses, and other accessories in subjective refraction (finding the correct spectacle power) and retinoscopy.

  3. Subjective refraction - Wikipedia

    en.wikipedia.org/wiki/Subjective_refraction

    Subjective refraction. (Top) 0.50 confirmation set; (Middle) trial lens box, including pinhole and occluder; (Bottom) Snellen chart. Subjective Refraction is a technique to determine the combination of lenses that will provide the best corrected visual acuity (BCVA). [1] It is a clinical examination used by orthoptists, optometrists and ...

  4. Optometer (ophthalmic instrument) - Wikipedia

    en.wikipedia.org/wiki/Optometer_(ophthalmic...

    Around 1910, binocularity was tested using trial frames which sat on the patient's face or on a support bar, with extra testing devices added to the front of the frames, such as Maddox rods, rotating prisms, and phorometers.

  5. Eye examination - Wikipedia

    en.wikipedia.org/wiki/Eye_examination

    29271-4. An eye examination 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 .

  6. Maddox rod - Wikipedia

    en.wikipedia.org/wiki/Maddox_rod

    Trial frames; Indication of use. The Maddox rod test should be used in cases of: Small to moderate (i.e..<25pd) vertical deviations where there is simultaneous perception and normal retinal correspondence (NRC) Decompensated phorias. Acquired strabismus (rather than congenital or early onset) Method of assessment

  7. Trial frame - Wikipedia

    en.wikipedia.org/?title=Trial_frame&redirect=no

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Trial_frame&oldid=1083136171"This page was last edited on 17 April 2022, at 07:12 (UTC). (UTC).