| Description | These Low Contrast Flip charts contain 5 pages of various contrast levels showing 5 Lea Numbers® on each page. Optotype size is 9.5M. Contrast levels are 25%, 10%, 5%, 2.5% and 1.25%. These flip charts can be used at several different distances. | These Low Contrast Flip charts contain 5 pages of various contrast levels showing 5 Lea Numbers® on each page. Optotype size is 9.5M. Contrast levels are 25%, 10%, 5%, 2.5% and 1.25%. These flip charts can be used at several different distances. | They employ Lea Symbols®. Contrast levels are the same at 25%, 10%, 5%, 2.5% and 1.25%. Each offers a different set of Lea Symbols® to guard against memorization. Also uses recording forms (P/N 215400). Legend card provided. | They employ Lea Symbols®. Contrast levels are the same at 25%, 10%, 5%, 2.5% and 1.25%. Each offers a different set of Lea Symbols® to guard against memorization. Also uses recording forms (P/N 215400). Legend card provided. | Richmond Products has developed a new Pediatric Near Contrast Test Booklet with contrast sensitivity levels of full contrast (100%), 25, 10, 5, 2.5 and 1.25 percent using Michelson measures. One side of each page provides Lea Symbols™ for testing of |
| Features | Inquire | Inquire | Inquire | Inquire | - Provides both Lea Symbols™ and Lea Numbers™
- Contrast Levels 100%, 25%, 10%, 5%, 2.5% and 1.25%
- To simplify presentation, over-lay template can hide optotypes sizes
- Full contrast shows 20/400 to 20/10 in 17 increments, other levels show 15 levels
- Shows Optotypes in Snellen Feet and Meters, LogMAR, Decimal and Letter Size
- Pages tabbed at each contrast level. Instructions, Score and Recording Forms
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