Visual acuity - Wikipedia, the free encyclopedia ... 20/20vision can be considered nominal performance for human distance vision; 20/40vision ... vision (such as the Rosembaum chart) at 15.7 inches (or 40 ...
http://en.wikipedia.org/wiki/20/20_vision
2020vision and visual acuity Normal vision and visual acuity and meaning of 2020vision ... 20/40vision in at least one eye is the vision required to pass the driving test ...
What Does 20/20Vision Mean? 20/40vision means that the test subject see as 20 feet what a normal person sees at 40 feet. ... that a person with 20/40vision has vision that is only half ...
http://www.eyecaretyler.com/2020.htm
Take The Snellen Eye Test Online Take the Snellen Eye Test online, to determine your vision strength i.e. 20/20, 20/40, etc. ... with normal vision can see at 40 feet. You have 20/40vision. ...
Vision and Vision Correction The past 20 years have seen many innovations in vision correction methods, ... astigmatism end up with 20/40vision or better without glasses, a correction ...
Medical / Vision Standards ... medical procedures, the vision standard is: 20/40 or better (assessed ... Your vision, without your glasses, must be 20/40 (assessed for both eyes together) ...
The Eye Chart and 20/20Vision - AllAboutVision.com ... visual acuity; here's a sample eye chart and explanation of 20/20vision. ... of the United States, your best-corrected visual acuity must be at least 20/40. ...
http://www.allaboutvision.com/eye-test/
State Vision Requirements A person with vision of 20/40 or greater in each eye or both eyes together will ... test, applicants must have at least 20/40vision in either or both eyes. ...
What is 20/20Vision? An explanation of the meaning of 20/20vision. ... 6/12 is equivalent to 20/40, 6/60 to 20/200 etc. Snellen Vision Testing Cart. Your Name: ...