Accurate stereo test for mobile device (ASTEROID)
- ASTEROID stands for Accurate stereotest for mobile device.
- The aim was to develop a stereotest that addresses some of the concerns of existing tests.
- Real depth tests, such as the Frisby, suffer from monocular cues if the patient moves.
- Coarse (such as the Titmus) and fine (such as the TNO random dot) stereotests require the use of spectacles or visors and some fade with time.
- All existing tests require a fixed working distance.
- ASTEROID uses parallax barrier technology which provides a 3D image on screen without the need for spectacles or visors, offers no monocular cues and will not fade over time.
- The inbuilt camera allows instant image adjustment to compensate for any variation in working distances.
- Clinical trials show improved compliance from children and results compare well with random dot testing.