Refraction Exam or Visual Acuaty Test is a part of a routine eye examination. This test tells your eye doctor exactly what prescription you need for your eye glasses or contact lenses.
Eye Doctor ask for a Refraction Exam to diagnose these conditions:
Testing is done one eye at atime. Your Doctor will ask you to read the smallest rows of letters that you can see. You will be seated on a device called phoropter on which lens will be changed asking you each time which lens is clearer.
How much does it take?
This test takes between 3 to 5 minutes.