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Snellen Ophthalmology Chart Enamel Pin

PRODUCT TYPE: Pin

The Snellen visual acuity chart was developed in 1862 by ophthalmologist Herman Snellen. Snellen defined the “standard vision” as the ability to recognize the letters of the 20 line optotypes at a distance of 20 feet, hence the term "20/20".

Size: 1.5" tall

This soft enamel pin is cast from black nickel and filled with smooth epoxy filling.

$10.00

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Snellen Ophthalmology Chart Enamel Pin

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CUSTOMER REVIEWS

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L
L.W. (Massachusetts, United States)
My Own Stocking Stuffer

Bought for myself. Bought some pins for others and couldn't resist. It will be fun to have people read this pin. Lots of other great pins too. Science!

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Snellen Ophthalmology Chart Enamel Pin

Snellen Ophthalmology Chart Enamel Pin

$10.00