Uzbek inventor creates eyesight substitute
December 27, 2002 | Source: UPI
A video signal received from an electronic eye and converted to sound and mechanical oscillations can be used as an eyesight substitute for the blind.
The device uses an electronic light sensor and emits sounds and vibrations according to the composition of the object. For example, the pitch of the sound becomes higher if the object is light in color and lower if the object is dark. Users can become accustomed quickly to the signals from the device as it “sees” familiar objects.