Tag Archives | 20/20 vision

Fun Vision Facts – Part 4

Fun Vision Facts – Part 4

Regular readers of our blog will remember our Fun Vision Facts series and today it’s time for some more fun with optics! We’ve enjoyed putting together for you the wackiest, most surprising and wow-factor facts about all things eye-related. The eyes are truly an amazing muscle and though some of these facts are more silly than […]

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What Is 20/20 Vision?

What Is 20/20 Vision?

Herman Snellen, a Dutch ophthalmologist, designed the first eye chart with which visual acuity could be measured. Referred to as the Snellen Chart, it was developed in 1862 and is still used today. He set the baseline of measurement at twenty feet, the approximate distance at which light rays entering the eye are parallel and […]

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