CSV-1000 ETDRS Letter Chart R
The ETDRS test is now the US standard for evaluating LogMAR acuity. The CSV-1000 ETDRS Chart R test face provides standardized testing of ETDRS acuity. The CSV-1000 is the only instrument in which ETDRS acuity can be tested at the standardized light level of 85 cd/m2.
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