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  2. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. Thus a prism of 1 Δ would produce 1 cm visible displacement at 100 cm, or 1 metre. This can be represented mathematically as: = ⁡ where is the amount of prism correction in prism dioptres, and is the angle of deviation of the light.

  3. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Corrective lens. 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. Glasses or "spectacles" are worn on the face a short distance in front of the eye.

  4. John 6 - Wikipedia

    en.wikipedia.org/wiki/John_6

    4. John 6 is the sixth chapter of the Gospel of John in the New Testament of the Christian Bible. It records Jesus' miracles of feeding the five thousand and walking on water, the Bread of Life Discourse, popular rejection of his teaching and Peter 's confession of faith.

  5. Ophthalmic trial frame - Wikipedia

    en.wikipedia.org/wiki/Ophthalmic_trial_frame

    ophthalmic trial frame is used to hold lenses and other accessories during correction of refractive errors. Test of. Visual acuity. 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 ...

  6. An Historical Account of Two Notable Corruptions of Scripture

    en.wikipedia.org/wiki/An_Historical_Account_of...

    The account claimed to review the textual evidence available from ancient sources on two disputed Bible passages: 1 John 5:7 and 1 Timothy 3:16. Newton describes this letter as "an account of what the reading has been in all ages, and what steps it has been changed, as far as I can hitherto determine by records", [3] and "a criticism concerning ...

  7. Prism cover test - Wikipedia

    en.wikipedia.org/wiki/Prism_Cover_Test

    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]

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