CSV1000 ETDRS Letter Chart R500003
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The ETDRS test is now the US standard for evaluating LogMAR acuity. This CSV1000 ETDRS chart test provides standardized testing of ETDRS acuity. The CSV1000 is the only instrument in which ETDRS acuity can be tested at the standardized light level of 85 cd/m2.
Click here for the 500003 Answer Key.