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Practical contrast sensitivity acuity testing |
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| Authors: | R. C. Drews |
| Affiliation: | (1) 211 North Meramec Avenue, St. Louis, Missouri, USA |
| Abstract: | Summary A 2.0 neutral density (1% transmission) filter allows an easy, consistent and natural way of checking visual acuity on a low contrast Snellen test chart, and is particularly useful in documenting poor visual function in patients with certain types of cataract. |
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