Obtain a pair of round glasses without lenses, or if you already wear glasses, use your own.

准备一副圆形镜框，如果你已经戴眼镜了，那就用你自己的好了。

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His main lights were Arri tungstens, without the Fresnel lenses that cinematographers often use as broad spots.

拍摄时的主光是Arri钨丝灯，摄影师没有使用电影摄影师经常使用的菲涅耳镜头。

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Customers can buy pre-determined prescription strength lenses, or simply buy lenses with no prescription, without the need for an eye exam, which adds to the potential danger.

顾客不需要做任何眼部检查就可以买有视力矫正的美瞳，也可以买没有度数的美瞳，这也增加了潜在的风险。

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"I don't condone glasses without lenses, " Mr. Jones said.

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And today, laser surgery is helping many people see perfectly without corrective lenses at all.

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Point the binoculars or telescopes at the sun -- without looking through the lenses -- and aim the other end onto a piece of paper or cardboard.

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