| Description | For nearly forty years, Precision Vision has built a reputation of producing the most accurate and most durable vision testing tools available, including vision test charts for visual acuity measurement, ETDRS eye vision test charts, and more. We | ETDRS chart features equivalents listed on both the right and left sides of the acuity chart. These equivalents include feet, meters, decimal, and LogMar. This ETDRS acuity test is calibrated for testing at 4 meters. However, acuity results can be |