to help blind people and for understanding human eye more closely
Patricia Bath
Patricia Bath
Albert Einstein
Yeah
a man is blind _ one eye.
In estimate of about 20 people a year. It Is smart to wear eye protection even though it is very rare to go blind
The "electric eye" (photoelectric switch, photosensor) was invented in the 1920's and used for various purposes such as counting vehicles at toll booths and for burglar alarms.
Not always. I've heard of many blind people still living in their own homes, and they have seeing eye dogs to guide them and they get on perfectly fine.
Most people call them Seeing Eye dogs or guide dogs for the blind. Actually the Seeing Eye is one particular organization; there are several organizations that provide guide dogs for the blind and other types of assistance dogs also.
They make blind people more independent.
it helps blind people see