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LEA NUMBERS Chart for Vision Rehabilitation
The LEA NUMBERS® Chart is specifically crafted for evaluating individuals with severe visual impairment, both children and adults.
The chart contains optotypes ranging from 50M to 1M in size.
The largest optotypes, labeled as 50M, correspond to a visual acuity of 20/1000, 6/300, or 0.02 when viewed from a distance of one meter.
Conversely, the smallest optotypes, labeled as 1M, correspond to a visual acuity of 20/20, 6/6, or 1.0 at the same one-meter distance.
The test includes a one-meter cord to ensure the correct testing distance is maintained during examination.
LEA NUMBERS Chart 10 Feet
The vision screening test is tailored for schools and evaluating vision in children with special needs, starting from 5 years of age.
• Optotypes are proportionally spaced, following the logMAR scale.
• Line sizes on the chart range from 10/100 to 10/4 (equivalent to 3/30 to 3/1.2).
• Equivalents featured on the chart include letter size, 20-foot, 6-meter, decimal, and LogMAR measurements.
• The chart includes a hole for convenient wall hanging.
• Dimensions of the chart are 18" x 20" (45.7 cm x 50.8 cm) and it folds to 18" x 10" (45.7 cm x 25.4 cm) for easy storage and transport.
•Testing distance for the chart is set at 10 feet/3 meters.
LEA NUMBERS Chart 10 Feet
Language | English |
Color | White |
Brand | Good-lite |
Is it Waterproof | Yes |
(10 feet, 3 meters)