How Eye Charts Measure Your Vision

How Eye Charts Measure Your Vision

A Snellen eye chart is the eye chart used by your eye doctor to check vision acuity. Learn more about this exam tool.

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How Snellen tests assess visual acuity

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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

Traditional Snellen Eye Chart

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