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How Peek Acuity works

A letter “E” is shown on the screen. It changes in orientation and size, each size being a different vision level. 

The patient points in the direction of the E and the tester records this response by swiping on the phone screen in the same direction the patient pointed.


There is no need for the tester to look at the screen – the app works out if the answer was right or wrong.

The app calculates the vision score and presents at the end of the test and links to a simulation show what the visual world looks like for the person just tested.

“When you meet people and you can solve their problem, it’s a great feeling - it is not just my joy, but the joy of the patient. And when you share their joy then that is double joy.”

Dr Hillary Rono

Ophthalmologist and Peek Kenya Country Manager