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Test At Different Distances And Measurements

The School Health Vision App settings permit screening or testing at different distances and measurements.

Distance vision Optotype Notation Choices Include:

• 10 foot actual
• 20 foot equivalent
• 3 meter actual
• 6 meter equivalent
• Letter size (M size)
• Decimal
• LogMAR

For example, the screening/testing distance for distance vision charts used at the 20 foot equivalent setting would be 10 feet/3 meters with results equivalent to 20 feet (i.e., 10/10 would be reported as 20/20). Line sizes range in this setting from 20/16 to 20/63 and include 20/16, 20/20, 20/25, 20/32, 20/40, 20/50, and 20/63.