I purchased five pairs of glasses from Zennioptical.com over the past year and half. I bought various styles of glasses and a pair of prescription sunglasses. The price range has been between $8 to about $20 and of five, only one was not right. It made me dizzy. The one that was not right was the one I added anti-reflective coating and I am thinking perhaps coating might have caused the problem. In order to get the measurements, when I went to the local optician to get a prescription, I brought along the form and asked the optician to provide the necessary information. In order to get insurance to cover for the vision testing, I told optician that my eyes would get dry and irritated sometimes (which sometimes does happen).
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