ETDRS Visual Acuity Charts

CompanyPrecision Vision®Precision Vision®
Item4 Meter 2000 Series Revised ETDRS Chart "3"4 Meter 2000 Series Revised ETDRS Chart "2"
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DescriptionETDRS "2000" Series charts utilize a geometric progression from line to line. Each optotype on the chart is proportionally spaced. By using these types of progression and spacing the chart becomes balanced and equal. This give the patient a well Similar to the "Original" Series ETDRS chart, this revised version features the use of three separate charts for the testing of each patient's eyes separately and together. Each of the three ETDRS charts feature a different configuration of
Features
  • This "revised" chart incorporates a slight change in the difficulty score for each of the ten SLOAN letters derived from the best corrected visual acuity examinations of 7,420 eyes during the ETDRS study.
  • For testing at 4 meters (13 ft.)
  • Acuity range 40M to 2M (20/200, 6/60 to 20/10, 63 equiv.)
  • Measures 62 X 65 cm (24.5 X 25.5 in.)
  • Fits ETDRS Illuminator Cabinet CAT. NO. 2425
  • Can also be wall-mounted
  • This "revised" chart incorporates a slight change in the difficulty score for each of the ten SLOAN letters derived from the best corrected visual acuity examinations of 7,420 eyes during the ETDRS study.
  • The three ETDRS "2000" Series charts (Chart 1, 2, and 3) are balanced so that in each chart the ten SLOAN letters are represented at least once in every position.
  • For testing at 4 meters (13 ft.)
  • Acuity range 40M to 2M (20/200, 6/60 to 20/10, 63 equiv.)
  • Measures 62 X 65 cm (24.5 X 25.5 in.)
  • Fits ETDRS Illuminator Cabinet CAT. NO. 2425
  • Can also be wall-mounted
Product Number21232122
Chart Number32
Testing Distance4 meters (13 ft.)4 meters (13 ft.)
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