Eye Tracker Eyemax

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DynaVox Technologies


The DynaVox EyeMax System makes the eye tracking access method available to communicators who use the DynaVox Vmax. It is comprised of two parts: a DynaVox Vmax and a DynaVox EyeMax Accessory. The EyeMax System allows augmented communicators to access their Vmax with a simple blink, switch selection, or by dwelling on a desired area of the screen.

System name(s): EyeMax System

Who can use the system
Target users The EyeMax System can be used by people of all ages and abilities with direct vision in one or both eyes. It provides freedom for limited head movement, so the system never needs to be manually focused. The EyeMax System can be used by individuals with Cerebral Palsy, ALS, spinal cord injuries and many other genetic and degenerative conditions, as well as those: * Seeking a faster access method than is available with scanning * Needing customization options * Wearing contact lenses or glasses * Using both eyes or a single eye * Functioning with a degree of controlled head movement
What is required from the user To have full control of the system, the user should be able to move their eyes enough to look up, down, left and right and have adequate vision to view the screen. The users must be able to gaze on all areas of the 12.1-inch Vmax display that is about 24 inches in front of the user’s eyes. The user must be able to focus on one spot for at least a brief period of time. People within certain spectrums of the following conditions have the ability to operate an EyeMax: ALS, MS, brain injury, people living with the effects of stroke, Cerebral Palsy, spinal cord injuries, and others.
Can the system be operated entirely by the user without assistance once the system is setup and running? Yes. Once initially set up, the EyeMax System can be operated entirely by the User: including any potential need for re-calibration (many times, only a single initial calibration is needed with no need for future calibrations). For User's that can access a single switch - the user independence includes being able to turn the device on The User can change settings, self-program the device, perform environmental controls, send/receive email, browse the internet, send/receive telephone or text messages, read eBooks, and many other functions. The system was designed to give the user complete independence. It comes set up with an audible alarm feature; and a remote alarm feature (such as sending email/text message or an automatic phone call) can also be added that only takes a single selection to activate.
Applications within AAC
  • Keyboard substitute (gaze writing)
  • Mouse substitute
  • Single switch substitute
  • Internet browsing
  • Email
  • Games
  • Support for book reading (turn pages etc.)
  • Speech synthesis
  • Environmental control
Additional information/accessories The system - both dedicated/closed and standard/open versions - also includes: email access built directly into the communication software. A @mydvox.com email is also available at no charge to each user. eBook reader built directly into the communication software. Environmental Control (IR) included in
Supported languages English (UK/US); French (Canadian/French); USA Spanish; German
Technical specifications
Methods Infra-red sensitive camera. The EyeMax system utilizes the remote dark-pupil method.
Other features
Spatial resolution
Temporal resolution
Tolerance to ambient light / sunlight Works well under varying light conditions.
Tolerance to eye glasses and contact lenses Works well in most cases. Any issues due to reflections on glasses can typically be solved via a change of position.
Accommodation to human eye variations (iris color, ethnic background) Works well in all cases (iris color or ethnic background has no effect).
Freedom of head movements Large movements (>20cm). H x W x D = 6" x 9.4" x 11" Working distance of eyes from the display: 17-28"
Mobility The EyeMax System contains its own internal batteries and can be used for a full work-day without recharging. It is thus truly portable. It can be used both outside (sunlight) and inside. Lighting situations do not adversely effect the performance. Wheelchair use, bed/recliner use, and table top use are all common situations.
Weight 9 lbs 2 oz
Setup and system requirements
Computer requirement(s) The System on works with the DynaVox Vmax Communication & XP Desktop Device. The 1GB version of the Vmax is required.
Setup time 20 minutes
Calibration time 20
Number of systems in use 100-500

Contact details

Email: Jason.McCullough@dynavoxtech.com
Phone: 001-412-222-7993
Fax: 001-412-381-9096


2100 Wharton Street
Suite 400
Pittsburgh, PA 15203


online (www.dynavoxtech.com); telephone support; distributors in Europe.

Special Log-Me-In feature: We can control your system remotely via the internet to faciliate trouble shooting and training.

Website: http://www.dynavoxtech.com

Technical Information

The technical information below is mainly targeted at developers.

What is the eye tracker physical interface type? USB. Dedicated manufacturer's PC, eye tracker must use manufacturer's own PC. Connects to a DynaVox Vmax via a sturdy steel bracket.
Does the eye tracker require manufacturer's own dedicated software to operate, or can it be used with other suitable software? With any suitable software.
If the eye tracker can be used with other suitable software, will the manufacturer make the required control protocols available? Yes, to all.
Does the manufacturer's own dedicated software have an API (programming interface) to allow control over the manufacturer's software and eye tracker by third party applications? No.
If the manufacturer's own dedicated software and eye tracker has an API, will the manufacturer make the required control protocols available? No.
Is a stream of gaze data (x, y, pupil size, blink etc) from the manufacturer's own dedicated software accessible to other third party software? No, cannot be accessed in real time by third party software.
If a stream of gaze data is accessible in real time, will the manufacturer make the format available? No.
Can gaze data (x, y, pupil size, blink etc) from the manufacturer's own dedicated software be captured and saved in a file for later use and analysis? No, cannot be saved.
If gaze data can be captured and saved, is the saved data file accessible to third party software? No closed, may only be used with software by the manufacturer.