By Roberto VOLPE, M.D.
& Timothy ALBERT, O.D. ©
- Experimental Service
Tested with Netscape 2 and IExplorer 3 or newer
The visual acuity chart is most often utilized to measure a patient's vision.
A "self-test" eye chart is found on this page which allows you to check you vision. It's important to keep in mind the variables that may effect your results, such as room illumination, computer graphics card, monitor type, etc..
To check a child or an illiterate patient's visual acuity (VA) please use the Random E chart.
GO FOR IT!!
PLEASE, WAIT TO LOAD COMPLETELY THIS PAGE
HOW TO USE THE CHART
Easier to do than explain!! :-)) 8-))
1- Check each eye's VA separately by covering the other eye.
2- Check VA's with and without glasses on.
3- Increase to maximum the browser window that most naturally show the images!
4-Place yourself at a distance of about 10 to 12 feet or 3 to 4 meters (the exact distance IN METERS can be calculated by measuring on the monitor the figure to the left "IN" IN MILLIMETERS. For example, if on a monitor the measurement is 57mm, so then 57 x 0.069 = 3.93m. This would be the ideal distance at which to conduct this test. If the distance from the screen is too large, then decrease the dimensions of the browser window and redo the calculation.
5-Read the eye chart line of letters from large to small. At the top left of each line can be found the approximate VA, expressed in tenths, that would be necessary to read the perspective line.
6-To conduct a quicker and more accurate exam, let a second person cover and uncover the line of letters.
- VERY IMPORTANT: This page is best viewed without "FRAMES" created by same Links, to avoid frames please click on http://www.dada.it/eyeweb/eotto.htm
1/10 - 0.1 - 20/200
2/10 - 0.2 - 20/100
3/10 - 0.3 - 20/60
4/10 - 0.4 - 20/50
5/10 - 0.5 - 20/40
6/10 - 0.6 - 20/30
7/10 - 0.7 - 20/30
8/10 - 0.8 - 20/25
9/10 - 0.9 - 20/25
10/10 - 1.0 - 20/20
Back , Restart
Click Restart to repeat the test in the other eye.
The normal VA is 10/10 - 1.0 - 20/20!!!!!
To find other tests CONTINUE