| 释义 |
Definition of Snellen test in English: Snellen testnounˈsnɛlənˈsnelən ˌtest An eyesight test using rows of letters printed in successively decreasing sizes (the Snellen scale) of which patients are asked to read as many as they can. Example sentencesExamples - Failing the department's Snellen test is indicative of generally poor visual ability, especially among 70 + year old drivers.
- The Snellen scale tests distance visual acuity (distance vision) and is only one of the tests done to assess eyesight.
- The Snellen test for visual acuity is the test most commonly used and is based on distance vision.
- The values represented here are estimates of how the child would have scored on the Snellen scale.
- As with the Snellen test, each eye is tested separately and then together, with and without corrective lenses.
Origin Mid 19th century: named after Hermann Snellen (1834–1908), Dutch ophthalmologist. Definition of Snellen test in US English: Snellen testnounˈsnelən ˌtest A test of visual acuity using rows of letters printed in successively decreasing sizes (the Snellen scale). Example sentencesExamples - The values represented here are estimates of how the child would have scored on the Snellen scale.
- The Snellen test for visual acuity is the test most commonly used and is based on distance vision.
- As with the Snellen test, each eye is tested separately and then together, with and without corrective lenses.
- The Snellen scale tests distance visual acuity (distance vision) and is only one of the tests done to assess eyesight.
- Failing the department's Snellen test is indicative of generally poor visual ability, especially among 70 + year old drivers.
Origin Mid 19th century: named after Hermann Snellen (1834–1908), Dutch ophthalmologist. |