OPTOTYPE

An 'optotype' is a standardized symbol for testing vision. Optotypes can be specially shaped letters, numbers, or geometric symbols. For instance, to determine visual acuity, optotypes of different sizes are presented to a person and the smallest size is determined at which the person can reliably identify the optotypes.

Contents
See also

See also



★ Landolt C

★ Lea test

★ Snellen chart

★ Goldmann grid

★ E-hooks

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