-40%
Snellen's Distance Vision Eye Chart 20 Ft. LABGO 25
$ 23.76
- Description
- Size Guide
Description
Snellen's Distance Vision Eye Chart 20 Ft.Excellent Quality
Made In India
Descriptions:
These Snellen Eye Chart was originally introduced in 1862 by Herman Snellen. The Snellen eye Test uses the idea of subtended 5 minutes of arc with a 20 Feet distance. This became the "Standard Vision" measurement. Also, Snellen developed the idea of a 5 x 5 grid for a standard for his optotypes. Each Optotype must meet certain percentage requirements in this grid before it is used for testing. This helps to make a uniform and equal vision chart. The Snellen eye test is the basic many other vision tests.
Specification:
Non reflecting, matte finish eye Charts, Designed for Vision Testing at 20 Feet distance.
Eye Chart measures 22 x 11 in.
Plastic Washable Sheet.
Wall Hanging Whole for easy hanging.
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