Results from smartphone-based Snellen charts, which are eye charts used to measure visual acuity, are not consistent with results from standard Snellen visual acuity chart tests, according to a study ...

Objectives To assess the ability of patients with binocular 6/9 or 6/12 vision on the Snellen chart (Snellen acuity) to read a number plate at 20.5 m (the required standard for driving) and to ...

What does 20/20 vision mean? When you visit your doctor or an eye care professional, you may be asked to read an eye chart. You may be told you have normal 20/20 vision. What does that really mean? An ...

The Driver and Vehicle Licensing Agency (DVLA) is to update its eye condition guidance but what is the eye test you need to pass? The changes, which are expected within weeks, will require those with ...

This week’s question was asked by: a close relative. QUESTION:Why is there that big E on the top of eye charts? ANSWER: We can credit Dr. Hermann Snellen, a Dutch ophthalmologist at the Netherlands ...

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, ...