The MOST accurate visual acuity test on the iPad (or iPad mini).

A built-in auto-calibration function on the iPhone/iPod will adjust the size of the Snellen Chart (and brightness) to produce accurate and reproducible results.

The iPad chart is fully functional, but the best way to use the app is with the iPhone/iPod remote (this requires an in-app purchase for full functionality).

An auto-dim function is set to time the screen out at 2 minute to prevent the iPad battery from being depleted (this is now user adjustable).

Tested with all iPad versions (maximal chart distance 7.4m/24ft), and with the iPad mini (maximal chart distance 6m/20ft). Tested with all current iPods with a built-in camera and iPhones except the iPhone 3.

The app has been tested by Ophthalmologists, feedback is encouraged.

What’s New

Version 1.8

Updated to ios8. The option to toggle 6/5 Snellen line added.
Auto-calibration of some of the newer devices may not be accurate - feedback to fine tune this is appreciated.

Ratings and Reviews

3.3 out of 5
4 Ratings

4 Ratings

soochip ,

Great app

Im optometrist and i found this app is really great, both the flow how it runs and functions, just some minor things need to be changed to be come core app for those practicians like me:

Jayng1985 ,

Cross Cyl chart?

Can't find cross Cyl chart... If its there, it's very difficult to navigate to! Overall it's good but if u have ishihara and other charts it will be great

RXCam User ,

Does not support calibration with iPhone7

I purchased this eyeSnellen app recently. Disappointed because there’re is no way to adjust the settings for iPad mini and iPad Pro. The calibration option that comes with the iPhone remote does not work (iPhone 7).


Steve Colley
16.6 MB

Requires iOS 8.1 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
© Steve Colley 2012
In-App Purchases
  1. eyeSnellen Pro $14.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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