Eye Test vs Calculate VA

The Tumbling E-test(ETDRS based) is a test of visual acuity. The results are based on the logMAR scoring metric - the Line Scoring Method. The corresponding decimal equivalent is also included. For this app, logMAR measures range from -0.2 to 0.70 and the decimal equivalent from 0.2 to 1.58. A decimal score below decimal 1.0 is considered below normal, requiring a test by an optometrist or an ophthalmologist. Less than three correct answers per line of five will end the test. If this is the case for the first line no result is calculated. How to use the app: 1. Have a helper hold the device and swipe the screen in the direction you are pointing. 2. At a distance of 3 metres to the screen, ask your helper to start the test when seated and ready. Take your time. 3. Add a photo of the tested eye(s). 4. Share your result with your optometrist or ophthalmologist.

Calculate VA gives you a quick and accurate way to easily convert between common measures of visual acuity. Conversions are made instantly when you enter one of the visual acuity measurements and press "Calculate". Choose from: * Snellen 20 * Snellen 6 * Decimal * logMAR * ETDRS Letters This is useful for any optometrist or ophthalmologist who needs to convert fluidly between all 5 of the common visual acuity measures.