They did not fit close to my eye and would not stay on.

I could never get it to fit my eye correctly. One side was always to far from the lid no matter how I tried to get it to work. I cut one magnet off to make it shorter and it worked better, but still did not stay close to my lid and eventually came off. I could not answer the last two questions as I never kept it on long enough. I gave them as a gift to my daughters-in-law but do not know if they could work them either. Would not buy them again.

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