Question

Explain how optical and non-optical aids help visually challenged person to
develop their skills to a higher level.​

Answer 1

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Special optical devices called low vision aids often can enable people to use their  remaining  vision more effectively and do things they thought  were no longer  possible . These  devices include  customised  magnifiers for reading , computerised  text to speech  devices .

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Answer 2

Answer:

Non-optical aids - These often include (1) Tactual aids (using sense of touch). The visually impaired

can learn to read and write by using a special touch system called the Braille. This system makes use of

raised dots on a paper. (2) Auditory aids (using sense of hearing) include audio cassettes, tape recorders,

audio CDs, audio books and electronic devices like computer / calculators / closed circuit television. These,

with the help of a software program, can transfer text files into sound.

Optical aids - These include lenses and telescopic aids. While suitable lens combinations are used to rectify

visual limitations, the telescopic aids can help to view class demonstrations and the blackboard.

Explanation: