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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.

How is the visual acuity test performed?

The visual acuity test is performed one eye at a time. The results are recorded as 20/#. The first number (20) denoting the patient’s distance (in feet) from the chart, the second number denoting the distance (in feet) an eye with perfect vision can read the same line. A visual acuity reading is the most important element of an eye test.

What is near visual acuity (na)?

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. Confusion can result from their use. A common near acuity card is the Rosenbaum card.

How do you measure distance visual acuity?

Visual Acuity. Distance visual acuity is typically measured using an eye chart. Various forms of eye charts have been proposed and are in use today. The most familiar is the Snellen eye chart.


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