While there are no FDA-cleared Snellen test apps, at least one other vision test application has pursued and secured FDA clearances in recent years. A few months ago, Vital Art and Science, developers ...

Equation (1) is the derived equation from the standard definition of VA for computing the optotype size. I find it very interesting that authors found only 3 of 11 applications that had a measured ...

WILMINGTON -- Do you remember in school lining up with your class to take a vision test using the Snelling Chart -- big letters at the top, smaller letters in bottom rows? Something new has come to ...

And now a page from our "Sunday Morning" Almanac, January 18th, 1908, 107 years ago today . . . the day the Dutch ophthalmologist Herman Snellen died at the age of 73. You may not recognize his name, ...

An app to test eyesight easily and affordably using a smartphone is as accurate as traditional charts, according to a study published today. Peek (the Portable Eye Examination Kit) is a unique ...