'To test for visual acuity, the Snellen chart is designed to be read from this many feet away'
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MEDICAL TALK: To test for visual acuity, the Snellen chart is designed to be read from this many feet away
To test for visual acuity, the Snellen chart is designed to be read from this many feet away
To test for visual acuity, the Snellen chart is designed to be read from this many feet away
MEDICAL TALK
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MEDICAL TALK