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    CEMIT Lite v1.2 for iPhone, iPod touch & iPad

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CEMIT (Component Extraction & Motion Integration Test) is a novel, short, and easy visual test that uses a direction discrimination task. We hope it will help us to understand visual performance in the brain and tell us in particular how well observers can extract information about the moving patterns and how they are then perceived. This test allows us to measure individual visual performance at the neuronal level that no eye test or scanning technique could currently access. We hope to use it to help us understand visual deficits possibly associated with a number of clinical populations such as dyslexia, dementia, autism, and Alzheimer’s disease, as well as measure performance for screening purposes in occupations where visual information plays a very important role, e.g. drivers, pilots, or air traffic controllers.

Disclaimer: This CEMIT app is part of a research study in visual perception and is intended for users who would like to participate in this study as experimental subjects. Please read the ethics form and instructions provided before running the test. The CEMIT test is made available to you for educational purpose only. It is not a clinically approved diagnostic test and do not replace regular visits to your vision care specialist.

This test was designed in laboratory by Dr. Linda Bowns (University of Cambridge, UK) and developed by Dr. William Beaudot (KyberVision, Montreal, Canada) to work on the iPhone, iPod touch and iPad mobile devices. An extended version of the “CEMIT” test will also be available soon for research groups. Contact us if you are interested in the research version of CEMIT or would like us to develop a visual test on your behalf:


Version 1.2 (March 25, 2017)
- Compatibility with iOS 9 and iOS 10
- Support for iPhones 6/6S/7 and 6+/6S+/7+, and iPad Pro 12.9”
- Fix a crash when measuring viewing distance with built-in camera
- Allow manual specification of viewing distance if camera access not granted
- Minor improvements

Version 1.1 (August 18, 2013)
- Minor update in documentation and checking of network status.

Version 1.0 (July 16, 2013)
- First released version on AppStore.