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  2. Tear break-up time - Wikipedia

    en.wikipedia.org/wiki/Tear_break-up_time

    Tear break-up time (TBUT) also known as tear film break-up time (TFBUT) is the time taken for the first dry spot to appear on the cornea after a complete blink. TFBUT measurement is an easy and fast method used to assess the stability of tear film. It is a standard diagnostic procedure in the dry eye clinics. [1]

  3. Schirmer's test - Wikipedia

    en.wikipedia.org/wiki/Schirmer's_test

    This test is used when a person experiences very dry eyes or excessive watering of the eyes. It can cause damage to the cornea. [1] A negative (more than 10 mm of moisture on the filter paper in 5 minutes) test result is normal. Both eyes normally secrete the same amount of tears. It is named for Otto Schirmer. [2]

  4. Subjective refraction - Wikipedia

    en.wikipedia.org/wiki/Subjective_refraction

    Step 5: Spherical lens power is altered and refined, if required. The entire process of Subjective Refraction involves the patient fixating at the Snellen Chart, whilst the clinician presents a variety of lenses and alters the power of the lenses in the trial frames according to the patient's subjective responses regarding improvements to their ...

  5. List of instruments used in ophthalmology - Wikipedia

    en.wikipedia.org/wiki/List_of_instruments_used...

    to correct refractive errors of the eye; not invasive Contact lenses: to correct refractive errors of the eye; a little invasive Phoropter: used in refraction testing Tonometers: used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation

  6. The 10 Best Eye Drops for Dry Eyes for Instant Relief From ...

    www.aol.com/lifestyle/10-best-eye-drops-dry...

    The best eye drops for dry eyes in 2023 work to soothe various dry eye symptoms. Here, find expert-approved picks from Refresh, Systane, Opti-Free, and more.

  7. Eye examination - Wikipedia

    en.wikipedia.org/wiki/Eye_examination

    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. [2] It also includes other tests and examinations of the eyes. [2] Eye examinations are primarily performed by an optometrist, ophthalmologist, or an orthoptist.

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