Snellen Eye Chart, Eye Charts for Eye Exams 20 Feet 22ￗ11 Inches

Product Description

The Snellen eye chart was originally introduced in 1862 by Herman Snellen. The Snellen eye test uses the idea of a subtended 5 minutes of arc with a

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NOYOC Eye Charts for Eye Exams 20 Feet, Snellen Eye Chart with Wooden Frame for Wall Decor, 22x11 Inches Canvas Low Vision Eye Chart with Eye Occluder and Hand Pointer for

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Snellen Eye Chart, Eye Charts for Eye Exams 20 Feet with Wooden Frame 11x22 Inches, Canvas Low Vision Eye Test Wall Chart with Eye Occluder Hand Pointer for Kids Gifts (20 Feet Test Distance)

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Snellen Eye Chart, Eye Charts for Eye Exams 20 Feet 22×11 Inches, Low Vision Eye Test Charts for Wall Décor Kids Gifts : Industrial & Scientific