I bought yellow glasses for bicycle, and one lens has little bit less tone (more lighter). Is this defect?
closed as not constructive by zenbike♦ Jun 2 '13 at 17:12
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It probably just means that the quality standards aren't too exacting. Kind of like how display panels with a few dead pixels aren't considered defective.
You could contact the manufacturer to ask whether the problem is covered by warranty, or you could just return them and buy a different brand. There's no point in keeping glasses you dislike.