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Proportionally-spaced (geometric progression) line sizes ranging from 20/200 to 20/10 (6/60 to 6/3) equivalent. Revised version of the original ETDRS series.
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Date:
June 27, 2009
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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" 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 difficulty scores from the "original" charts were derived from the examination of 234 eyes. This further testing helped to
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Date:
June 27, 2009
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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
Similar to the "Original"
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Company:
Date:
June 27, 2009
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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
ETDRS "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 b
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Company:
Date:
June 27, 2009
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For testing at 4 meters (13 ft.)
Acuity range 40M to 2M (20/200, 6/60 to 20/10, 6/3 equiv.)
Only standardized format accepted in studies sponsored by the National Eye Institute
Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required
Lines are of equal difficulty
Geometric progression in letter size from line to line
Letter size is only variable
Measures 62 X 65 cm (24.5 X 25.5 in.)
Chart fits the ETDRS Illuminator Cabinet CAT. NO. 2425
Can be wall-mounted
ETDRS charts use a series of three charts with differen
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Company:
Date:
June 27, 2009
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For testing at 4 meters (13 ft.)
Acuity range 40M to 2M (20/200, 6/60 to 20/10, 6/3 equiv.)
Only standardized format accepted in studies sponsored by the National Eye Institute
Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required
Lines are of equal difficulty
Geometric progression in letter size from line to line
Letter size is only variable
Measures 62 X 65 cm (24.5 X 25.5 in.)
Chart fits the ETDRS Illuminator Cabinet CAT. NO. 2425
Can be wall-mounted
ETDRS chart features equivalents listed on both the rig
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Company:
Date:
June 27, 2009
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Acuity range 40M to 2M (20/200, 6/60 to 20/10, 6/3 equiv.)
Only standardized vision test accepted in studies sponsored by the National Eye Institute
Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required
Lines are of equal difficulty
Geometric progression in letter size from line to line
Letter size is only variable
Measures 62 X 65 cm (24.5 X 25.5 in.)
Chart fits the ETDRS Illuminator Cabinet CAT. NO. 2425
Can be wall-mounted
ETDRS vision charts were used during the first phase of the Early Treatment Diabetic
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Date:
June 27, 2009
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The ETDRS test is now the US standard for evaluating LogMAR acuity. The CSV-1000 ETDRS test face provides standardized testing of ETDRS acuity. All three ETDRS tests are available: Chart R, Chart 1, and Chart 2. 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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Company:
Date:
June 27, 2009
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The only ETDRS viewing cabinet that selfcalibrates illumination on the chart surface for both photopic (85 cdm2) and mesopic light level testing. The unit utilizes the most advanced selfmonitoring LED light source patented technology, providing uniform and highly calibrated illumination across the entire testing surface (Patent 5,078,486). Automatically adjusts to incoming power of 100 to 240 VAC. Controlled by infrared
wireless remote. Chart storage in back. Compatible with all existing high contrast (black) ETDRS charts. 24.5"H x 25.5"W x 3.75"D (62 cm x 65 cm x 36 cm). CE and CSA listed.
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Company:
Date:
June 27, 2009
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Proportionally-spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent.
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Company:
Date:
June 27, 2009
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