Good for reading the paper, watching a movie and everything in between, TruFocals glasses are the first spectacles to offer adjustable focus on the go.
真视镜适用于从看报到看电影的各种场合，它是目前市面上第一款可调节度数眼镜。
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Silver made his prototype glasses, called AdSpecs, in the mid-90s after helping cosmetics giant Estee Lauder develop an inexpensive mirror with adjustable magnification.