What is optical adis and non optical AIDS

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Solution

Optical aids are those aids using optical instruments for improving the vision. Examples of optical aids are: spectacles, contact lenses, magnifying glasses etc.

Non optical aids are those aids other than optic al aids used in daily life i.e instruments like visual aids, tactual aids, audio aids and electronic aids.

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Example(s) of optical aids for visually challenged people is/are:

Which of the following is an optical-aid used by visually challenged persons to develop their capabilities?

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