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  2. Golovin–Sivtsev table - Wikipedia

    en.wikipedia.org/wiki/Golovin–Sivtsev_table

    The value D, indicated to the left of each row, gives the distance in meters from which a person with a visual acuity of 1.0 can read the corresponding row. The value V, indicated to the right, gives the minimum visual acuity needed to read the row from a distance of 5 meters. The first row contains symbols 70 mm in size (V = 0.1); the second ...

  3. Near visual acuity - Wikipedia

    en.wikipedia.org/wiki/Near_visual_acuity

    Near visual acuity or near vision is a measure of how clearly a person can see nearby small objects or letters.Visual acuity in general usually refers clarity of distance vision, and is measured using eye charts like Snellen chart, LogMAR chart etc. Near vision is usually measured and recorded using a printed hand-held card containing different sized paragraphs, words, letters or symbols.

  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. Jaeger chart - Wikipedia

    en.wikipedia.org/wiki/Jaeger_chart

    The Jaeger chart is an eye chart used in testing near visual acuity.It is a card on which paragraphs of text are printed, with the text sizes increasing from 0.37 mm to 2.5 mm. [1] This card is to be held by a patient at a fixed distance from the eye dependent on the J size being read.

  6. 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 ...

  7. Landolt C - Wikipedia

    en.wikipedia.org/wiki/Landolt_C

    The minimum perceivable angle of the gap is taken as measure of the visual acuity. It is generally practised in the laboratory. [1] The stroke width is 1 ⁄ 5 of the diameter, and the gap width is the same. [2] This is identical to the letter C from a Snellen chart. The Landolt C is the standard optotype for acuity measurement in most European ...

  8. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    Visual acuity is a subjective test meaning that if the patient is unwilling or unable to cooperate, the test cannot be done. A patient who is sleepy, intoxicated, or has any disease that can alter their consciousness or mental status, may not achieve their maximum possible acuity.

  9. Hindi film music - Wikipedia

    en.wikipedia.org/wiki/Hindi_film_music

    Hindi film songs, more formally known as Hindi Geet or filmi songs and informally known as Bollywood music, are songs featured in Hindi films.Derived from the song-and-dance routines common in Indian films, Bollywood songs, along with dance, are a characteristic motif of Hindi cinema which gives it enduring popular appeal, cultural value and context. [1]