Determine Your Appropriate Lens Strength
THINOPTICS lenses are available in four strength ranges
also fits +0.75 to +1.25
also fits +1.25 to +1.75
also fits +1.75 to +2.25
also fits +2.25 to +2.75
Print this eye test chart. Make sure “Fit to Page” is off. The page should print at actual size. Do not test vision on screen. To make sure this test is accurate, the chart below should be 5 inches wide.
With your glasses off, read the lines of copy in the chart below from a distance of about 14 inches.
The first line you have difficulty reading corresponds to the lens strength that is best suited for you.