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Presbyopia is a degenerative disease.
It is also one manifestation of the aging human body.
The tools that are combined with a zoom function in fittings not only improve the problem of easily forgetting to carry presbyopic glasses, but also feel comfortable to wear it.
It can be used as a portable magnifying glass. The magnifying glass is removable. One can only nudge it with little effort to remove it.
Li - Ying Hsu Pin-Jie Zhou Bao-Ching Ho Bao-Han Ke