Distance Vision Chart 6 6
But say your vision is failing and you read small letters poorly. However it is now referred to as a 66 vision. Pin On Products In order to measure your distance vision optician eye doctors compare your vision with that of a person with normal acuity. Distance vision chart 6 6 . In the United States this distance typically is 20 feet. If visual acuity is 66 it is considered as normal visual acuity. Test your eyes with our distance acuity chart. Cataract retina cornea glaucoma lasik contact lens total 100 charts Voltage. Outside the United States the standard chart distance is 6 metres 20 ft and normal acuity is designated 66. The middle letter of the top line is equivalent to 20200. The lines in a Snellen chart are arranged in way that the lines become smaller as you keep looking further down. The first number is usually a 6 which simply means that the distance from you to the eyechart is 6 metres. Snellen defined standard vision as the ability to recognize one of ...