| Description | This "revised" ETDRS chart incorporates a slight change in difficulty score for each of the ten Sloan optotypes. These difficulty levels were derived from the best corrected visual acuity examinations of 7,420 eyes during the ETDRS study. The | 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 | - 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
- Printed on high-impact polystyrene
| - 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
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