Purchased on May 2nd, just 3 months ago. I was pleased with their effectiveness in reducing computer eye strain without darkening the room too much. But I've just taken them off my glasses to wash them and the rubber cover that sits over the clip that holds them to the glasses splintered and the wire underneath popped out and scratched my glasses. I didn't expect superiority for only twenty bucks. But only three months of use before it falls apart? I wouldn't complain if they lasted at least a year. I am an elderly woman and I treat this product with care. Very gentle handling and was only removed from my computer glasses for cleaning. I am very disappointed in the lack of durability and poor quality of this product. Revain's return date has passed. Basically I threw twenty dollars in the trash can. If you want to reduce eye strain at the computer, look at another brand.
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