Snellen Distance Vision Eye Chart 20 Ft Free Shipping
Snellen Distance Vision Eye Chart 20 Ft Free Shipping
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. Also, Snellen developed the idea of a 5 x 5 grid for a standard for his optotypes.
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Eye Chart to Print. PNG, DXF, SVG, Eps. Cricut Cut Files, Silhouette Files Included. Digital, Instant Download. Eye Test Chart for Office.
Tumbling E Visual Acuity Chart 3 Meters , T: Bernell Corporation