Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required.
Can be wall-mounted.
ETDRS charts use a geometric progression from line to line, making only the
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Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required.
Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required.
Can be wall-mounted.
ETDRS charts use a geometric progression from line to line, making only the
Brands | Precision Vision |
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Dimension : 27 × 27 × 0.04 in
LogMar Values : Yes
Testing Distance : 2 Meter, 2.5 Meter, 3 Meter, 4 Meter
Optotypes : Sloan
Contrast : No
Material : Plastic
Front Side : Yes
Back Side : No
For Visual acuity levels beyond the limit of the letter charts, the common practice is for clinicians to categorize vision according to whether the patient can count fingers (CF) or detect hand motion (HM), but there is no recognized or standard procedures for doing this.
2425LED-300 7 Presets at 3, 10, 40, 85, 160, 320 and 800 cd/m2
This configuration allows for testing vision under several different luminance levels with optional charts in high contrast, low contrast and threshold contrast and different test distances.