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Evans Letter Contrast Test (ELCT) Set, Chart 2

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MFR:: 500332
Medex SKU:: GL-500332
Packing Info:: 1/Each
Usually Ships:: 1 - 2 Business Days
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Description

Evans Contrast Test #2

The Evans Letter Contrast Test (ELCT) chart is the first standardized test for letter contrast sensitivity. The ELCT chart is designed to be used with either the ESV3000 or ESC2000 providing consistent lighting for improved testing results. The ELCT chart presents Sloan Letters optotypes line size of 20/630 with a testing distance of 1m. The varying contrast in sets of 3 letters of equal contrast level. All triplets are balanced for letter difficulty and differ in contrast by 0.15 log contrast step.

ELCT Chart 2 presents 4 contrast levels from 1.8 to 2.25 log contrast.

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