It takes a little simple common sense to wear contact lenses effectively and safely and treat them properly.这需要一些简单常识佩戴隐形眼镜，有效和安全，并妥善对待他们。 There are a variety of cheap contact lenses available, and the type of lens you wear depends on your specific vision problem.有各种各样的廉价隐形眼镜，并且类型的镜头，你穿取决于您的具体设想的问题。
There are so many lenses available now that those who were once considered bad candidates [...]有这么多镜头现已谁，这些一度被认为是坏的候选人[...]
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