Keyword Analysis & Research: jaeger 1 visual acuity

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Frequently Asked Questions

What is the acuity of Jaeger test?

They consist of ordinary printers' types of various sizes and are arranged as words and phrases. Depending on the size of test types read, acuity is recorded as J.1, J.2 in ascending size up to J.20. The smallest Jaeger (J.1) subtends an angle of 5′ at 450 mm from the eye. See near visual acuity.

What is the purpose of a Jaeger eye chart?

The Jaeger eye chart (or Jaeger card) is used to test and document near visual acuity at a normal reading distance. Refractive errors and conditions that cause blurry reading vision include astigmatism, hyperopia (farsightedness) and presbyopia (loss of near focusing ability after age 40).

What is a J1 visual acuity chart?

Visual Acuity and Eye Charts. Near visual acuity is typically tested with a reading card to assess a subject’s ability to accommodate. Jaeger scores (designated J1, J2…) are sometimes used to rate near acuity. However, these values are not standardized for size or test distance.

What is the font size of a Jaeger eye chart?

The type scale on a modern Jaeger eye chart usually ranges from J10 (approximately 14-point type for Times New Roman font) to J1 (approximately 3-point type, Times New Roman). Some Jaeger charts have an additional paragraph labelled "J1+" that may be even smaller than the J1 block of text.

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