explain how optical and non optical aids help visually challenged person to develop their skill to a higher level
Answers
Answer:
these is a basic difference to understand the optical and non optical
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 make 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 programme , 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:
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Answer:
They include one or more lenses which are placed between the eyes and the object to promote enlargement or magnification of the retinal image. ... Small telescopes improve the ability to see distant objects or people. Non optical aids. They help patients with sight impairment to deal with everyday problems