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Topic summary

Posted by George W. Maschke
 - Jul 01, 2004, 04:59 AM
An explanation of the Snellen test for visual acuity is available here:

http://www.mdsupport.org/library/acuity.html
Posted by privateI
 - Dec 16, 2003, 04:46 AM
What exactly is meant by 20/200 Snellen?  Is there a conversion table?  I presently wear contacts and have the prescription on hand, but how can I translate those numbers to the Snellen numbers?  Please help! ??? :-[