| Acuity |
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| • | DEFINITION:
ability to resolve or see fine |
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| details. |
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| • | Visual
Angle: DEFINITION: Angle formed by |
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| object
on retina. |
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| • | Types
of Acuity: what is meant by acuity depends |
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| upon
the stimulus used to measure it. |
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| – | Detection: black bar on white field |
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| – | Resolution: a grating |
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| – | Recognition: e.g. Snellen, where |
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you read letters. |
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