| Color | Blue |
|---|---|
| Size | 1 Count (Pack of 1) |
| EAN | 0717076043021 |
| ISBN | 0717076043021 |
| Package Dimensions LxWxH | 8.74x6.1x0.67 Inches |
| Weight | 0.6 Pounds |
| Brand | Graham-Field |
| UPC | 717076043021 |
Check the listing for details. Ishihara Test Chart Book Color Deficiency Test Easy Reference Vision Testing. Color: Blue, Condition: New. Listed at 36.26 USD. Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green. Consist of a number of colored plates. On each plate is printed a circle made of many different sized dots of slightly different colors, spread in a random manner.
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