Who are Visually Impaired?
Those people who have decreased ability to see are called visually impaired people
Some people cannot see at all or some can see but not clearly
Some people are visually impaired by birth while others become visually impaired due to some accident
How do Visually Impaired People carry out their routine tasks
Develop Other Senses
They try to develop their other senses more sharply
Example
They are able to recognize people and objects by touching or listening
Use optical and Non Optical Aids
They use different optical and non optical aids to read and write
Example of Different Optical and Non Optical Aids for Visually Impaired
|
Optical |
Non Optical Aids |
|
Aids Relating to Sight |
Aids not directly related to sight |
|
Example Contact Lens Bifocal Lens Magnifier Telescopic Aids |
Auditory Aids Aids Related to Hearing Example - Audio CD,Cassettes,Talking Book Tactual Aids Aids which help in reading and writing Example - Braille Water Slate,Stylus Electronic Aids It means those aids which work with help of electricity Example - Talking Calculator, Computer Visual Aids The magnify words and give proper intensity of light (so it is easy to read) |
Braille System
It is a system by which visually challenged persons(blind persons) can read and write
It was developed by Louis Braille in 1821(he was himself visually challenged)
There are 2 vertical rows of 3 dots each.
There are 63 different dot patterns.
Each dot pattern represent different characters
Example
Different Braille Alphabets are
