Static Visual Acuity


Test taker will place desired hand on arrow keys. Press arrow keys up, left, right down to indicate where you see the open part of the C.

Testing Options: Right Eye/Left Eye/Both Eyes

What is the test? The RightEye test, is a standard measure of optometry used to determine a test taker’s ability to see a stationary object clearly at near.

What is the purpose of the test? This test measures 20/20 vision that shows the Landolt C facing different directions and changing sizes.

Why is this important? Standard optometric charts for SVA (eg Snelllen charts) are limited to fixed rows of letters/numbers, not child-friendly, culturally adapted and require user literacy.

The RightEye test randomizes stimuli removing the test taker’s ability to memorize results. It removes the guess work from the test using sound and proven logic, to ensure accurate SVA levels for each eye are reported.

Life Example: An example of everyday use of static visual acuity is reading text in a book.


Static Visual Acuity (left, right): using the Landolt-C ranging from 20-20 to 20-50 using established testing logic. Static Visual Acuity (SVA) refers to how clearly you can see an object that changes size but does not move.