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2. Visibly - Wikipedia

   en.wikipedia.org/wiki/Visibly

   Visibly provides on-line vision tests and generates eyeglasses and contact lens prescriptions for site visitors, delivering these results via email within one day of the completion of the exam. The results of the exam are reviewed by an optometrist, are considered valid prescriptions, and may be used for ordering glasses or contacts over the ...

3. 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.

4. Eye chart - Wikipedia

   en.wikipedia.org/wiki/Eye_chart

   An example of the Landolt C eye chart (also known as the Japanese eye chart.). Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision, while the ETDRS chart is designed for use at 4 meters. [16]

5. Snellen chart - Wikipedia

   en.wikipedia.org/wiki/Snellen_chart

   A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific eye. The symbols on an acuity chart are formally known as "optotypes". Variation of Snellen chart with another letter ...

6. Visual field test - Wikipedia

   en.wikipedia.org/wiki/Visual_field_test

   A visual field test is an eye examination that can detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, pituitary disease, brain tumours or other neurological deficits.

7. Lea test - Wikipedia

   en.wikipedia.org/wiki/Lea_test

   The "LEA Numbers Test" was the second of the LEA tests that was developed and can be used to test the visual acuity of older children and even adults. This test has a layout similar to a typical Snellen chart , with lines of numbers decreasing in size towards the bottom of the page.