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单词 snellen chart
释义

Snellen chart

[ snĕlən ]

n.

A chart for testing visual acuity, usually consisting of letters, numbers, or pictures printed in lines of decreasing size which a patient is asked to read or identify at a fixed distance.

Words nearby Snellen chart

sneezewood, sneezewort, Sneffels, Snefru, snell, Snellen chart, Snellen's test types, Snellen test, Snell's law, SNF, SNG
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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