You will also learn how the Snellen Eye Chart is used to test visual acuity. Related: Checking Visual Acuity During an Eye Exam. Distance Visual Acuity Test.

South Africa also uses the metric system. Here the letters are six metres away, and normal vision is 6/6 - the equivalent of 20/20. What can be done? When the acuity has been assessed, and if the ...

Almanac: The eye chart 01:48. 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.

The most important part of testing any organ, is the test of how well the organ works. So, when it comes to the eye, we need to assess how well the eye sees. This function is known as the visual ...