| Snellen's r. |
unilateral congestion of the ear upon stimulation of the distal end of the divided great auricular nerve; called also auriculocervical nerve r.
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| Snellen's t. |
1. (for pretended blindness in one eye) the patient is requested to look at alternate red and green letters; the admittedly sound eye is covered with a red glass and if the green letters are read, evidence of fraud is present. 2. determination of visual acuity by means of Snellen's test types.
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| Snellen's chart |
A chart imprinted with lines of black letters graduating in size from smallest on the bottom to largest on top; used for testing visual acuity.
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| Snellen's reflex |
Congestion of the ear on the same side upon stimulation of the distal end of the divided auriculotemporal nerve. SYN: reflex, auriculocervical nerve.
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| Snellen's test |
A test for visual acuity in which the patient reads a Snellen's chart at a certain distance with one eye, then with the other eye, and then with both eyes.
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