
I want to love these readers for the size and tint of the lenses but I can't. The problem is that half of the ones I've bought (ordered 2 times, returned once) have had the screws and subsequent levers fall off. Just today I turned the glasses upside down again and one of the levers and screws fell out. The second problem is that the center of the lens is sharp, but if you look to the side it's blurry. Curvature must be disabled. I have readers everywhere and use them in every imaginable application. I also bought a lot and I can tell you the best ones were these: https://www.amazon.com/gp/product/B01030BKOQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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