This system is mainly

developed for those who lack

the use of their hands or voice.

Its users are adults and

children with cerebral palsy,

spinal cord injuries, brain

injuries, ALS, multiple

sclerosis, brainstem strokes.

Ability to maintain position

Adequate vision

COGNITION MEMORYABILITY TO

READ

As a user sits in front of

the Eyegaze monitor, a

specialized video camera

mounted below the

monitor observes one of

the user's eyes.

User look at screen

For pupil-center/corneal-

reflection method.

Infra red sensitive

Video camera

Capture image 60/s

Image processing software

Sophisticated image- processing

software

analyses video images

Movement detected

Through comparison eye

movement detected.

Pointer moves on screen

BASIC SYSTEM

CALIBERATE

TYPEWRITE

GAMING

READ TEXT

SYSTEM WITH OPTIONS

BE A KEYBOARD

CONTROL APPLIANCES

DIAL AND ANSWER A PHONE

CALL

SPEAK THROUGH SPEECH

SYNTHESIZER

The Phrase Program

Typewriter Program

The telephone program

Run Second PC

Paddle games & Score Four

Read Text Program

Television

The Phrase Program Typewriter Program

The telephone program The Lights & appliances Program

Run Second PC

As a keyboard As a mouse controller

•The Eyegaze System must be

operated in an environment

where there is limited of

infrared light.

•The System works best away

from windows, and in a room

lit with fluorescent or mercury-

vapor lights, which are low in

infrared.

• NYSTAGAMUS(involuntary movement of eye ball)

• ALTERNATING STRABISMUS(eyes cannot directed to same object)

EYE MOVEMENT PROBLEMS

• INADEQUATE VISUAL ACCUITY

• DIPLOPIA(double vision)

• BLURRED VISION

• CATRACTS(clouding of eye lens)

VISION PROBLEMS

ADVANCEMENTS

Portable Eyegaze System

Mounted on Wheelchair Screen of Eyegaze System

•Neurosciences /Neuropsychology

•Vision Research

•Experimental Psychology

•Cognitive Psychology

•Psycholinguistics

•Psychiatry /Mental Health

•Transportation: Flight simulators /driving simulators

•Robotics - remote vision control

•Video and arcade games

Today, the human eye-gaze can be recorded by relatively

unremarkable techniques. This thesis argues that it is possible

to use the eye-gaze of a computer user in the interface to aid

the control of the application.

Care must be taken, though, that eye-gaze tracking data is

used in a sensible way, since the nature of human eye-

movements is a combination of several voluntary and

involuntary cognitive processes.

.