Snellen and Kindergarten Wall Eye Chart Size 22 x 11 Inch Combo Pack
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Product Information
Details
| Product Name | Snellen and Kindergarten Wall Eye Chart Size 22 x 11 Inch Combo Pack |
|---|---|
| Store Product Code | B01N8104DK |
| Store Name | amazon.com |
| Rating | 9.6 / 10 |
| Category | Eye Charts |
Features
- The Snellen eye test uses the idea of a subtended 5 minutes of arc with a 20 foot distance. This became the "standard vision" measurement. Also, Snellen developed the idea of a 5x5 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 chart is the basis for many other vision tests.
- Kindergarten Eye Chart is designed for children's visual acuity testing at a distance of 20 feet. This 11" x 24" symbol eye chart is made of extra strong, non-reflecting, matte finish cardboard, with a brass eyelet for wall mounting. Visual acuity notation from 20/200 to 20/10 is also noted in meters.
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Rating and Reviews
9.6 Based on 7 reviews
Snellen and Kindergarten Wall Eye Chart Size has 9.6 rating out of 10. This average rating is consist of 7 individual ratings. You can rate this product at product review page.
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