: Does vision really improve by wearing spectacles? I had a discussion with friends that. One of them who had an eye power of -0.75 has improved and now has an eye power of -0.50 . This happens because he is always wearing

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Does vision really improve by wearing spectacles?
I had a discussion with friends that. One of them who had an eye power of -0.75 has improved and now has an eye power of -0.50 . This happens because he is always wearing spectacles and has a good diet.

Is it really true that spectacles can improve vision? Please provide a full explanation if possible.

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