New FULL SIZE Snellen 22 x 11 Plastic Eye Test Wall Eye Chart Washable NIB

Snellen wall eye chart is the familiar chart with the big letter or symbol at the top and progressively smaller letters at the bottom of the chart

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Eye Chart, Upgraded Snellen Eye Chart for Eye Exams 20 Feet, 22x11 Inches Plastic Low Vision Eye Charts Wall Chart with Metal Eyelet for Kids Gifts

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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 and Tumbling E Non-Reflective Matte Finish Wall Eye Chart Size 22 x 11 Inch Combo Pack

Snellen Eye Chart, Eye Charts for Eye Exams 20 Feet 22

ANTIQUE EYE EXAM Chart - Snellen - Very Early - 1800s - 7 feet

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EMI Premium Quality Snellen Wall Plastic Eye Exam

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