Snellen Chart

João Meneses

About this app

This mHealth application intent is to provide and empower mobile regular users and health professionals with the tool with which they can estimate their or others visual acuity, based on a classical Snellen Chart Test. This App is innovative because it transforms an old style poster test design in a new, modern, intuitive, ubiquitous test. One App with a simple user interface, and an intuitive navigation chart using swipe gestures to navigate from optotype to optotype, and with the capability to adapt the Snellen Chart Test to different screen sizes, screen resolutions and user distances.

Ratings and reviews

Thank you. Outstanding app. Love the way it takes into account the screen size and pixel resolution, in addition to distance from the eyes. All adjustable in settings. You're a genius! The performance is actually much better that the charts in my eye doctor's office. Which is projected onto a screen, then reflected in a mirror. Each step of the way resolution is lost! Your app is so much better. Thank you for helping so many people with this app! God Bless you! Please add plain font option!

Excellent app. As a domiciliary optometrist a lot of my patients have dementia. I love the Sloan letters and the fact that I can have it as single letters. Some patients cannot cope with a full line of letters. I think this app is perfect. The only thing I would love for you to add is an option to test near vision from N5 to N60 then this would truly be the most perfect domiciliary app :)

Great app, much better than any others, but a few issues: * would appreciate diopters measurements * voice control is not comfortable, especially if English is not your native. Couldn't pronounce "down" correctly even a single time. Perhaps some control over wireless head phones could help? * some instructions would benefit some users Thanks for the app!

What's new

Minor changes/corrections.