| Snellen c. |
a chart imprinted with block letters (Snellen's test type) in gradually decreasing sizes, identified according to distances at which they are ordinarily visible; used in testing visual acuity. See also Snellen's test type, under test type.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Snellen chart, etc. |
see under chart, eye, sign, test, and test type.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Snellen reform e. |
an artificial eye composed of two concavoconvex plates with an empty space between.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Snellen s. |
the bruit heard with a stethoscope over the closed eye in Graves' disease; see also Graves' orbitopathy, under orbitopathy.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Snellen t. |
block letters used in testing visual acuity, so designed that the whole letter subtends, at the appropriate distance, a visual angle usually of 5 minutes, and each component part subtends an angle of 1 minute. See also Snellen chart, under chart.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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