Eye Gaze for learning, access, assessment and communication

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Eye Gaze for learning, access, assessment and communication

It has brought new opportunities for many by providing a successful method of access to computers and communication technology. A range of devices and associated software enabling computers to track eye movements has been developed, this can then be used to detect where on the screen the user is looking at any time. This will then allow the user to interact with standard computer software, much like using a mouse only indicating a choice by either “dwelling” that is maintaining their gaze on a chosen target for a set period or by activating a switch. Specialised eye gaze software has been developed to make for easier and more efficient use of these technologies.

Components of eye gaze systems

  • Tracking Device – the mechanics of the system that tracks the users eye movement
  • Driver software – the programs that convert eye movement to enable control over the computer and existing software. Different versions are available to suit user needs and abilities.
  • Eye enabled software – Developers of learning and communication software are working to ensure that their software includes features to allow direct interaction by eye gaze

Requirements

The various eye gaze systems operate in a similar way using a bar placed below the computer which can track eye movement using infra-red light which is reflected by the user’s eyes.  Successful use requires time to practice, care in the positioning of the user in relation to the computer, careful calibration of the system and choice of appropriate equipment and software. These requirements can limit its use for some pupils with more severe disabilities. Careful assessment and investigation of the different solutions is needed to ensure that the right hardware and software is chosen to prevent disappointment and failure.

Learning packages are available to help beginners and those with more severe disabilities learn to use eye gaze and develop their skills needed to access more complex materials. These basic activities have proved an excellent tool to assess the comprehension of children with severe and complex needs.