Which of the following is not included under optical aids?

Contact lenses

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Tinted lenses

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Magnifiers

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None of these

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Solution

The correct option is D None of these
Optical aids are instruments that are used for improving vision. Optical aids include bifocal lenses, contact lenses, tinted lenses, magnifiers etc.

Hence, options A,B,C all are included under optical aids.
So, the correct option is D.

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