I didn't have great expectations of these glasses. I bought them hoping they could reduce headlight glare. I've used them three nights in a row now and am very impressed. These wraparound goggles fit easily over my prescription glasses and are not at all heavy or uncomfortable to wear. As for headlight glare, these goggles exceeded my expectations. Before buying these glasses, I had serious doubts about night glasses. My biggest concern was that the goggles wouldn't affect my night vision by making dark areas even darker. Now I can say without reservation that this concern was unfounded. These lenses are made with a yellow tint, not a gray or dark tint. I see everything as clearly as with normal glasses. Wearing round night vision goggles will block most of the glare from headlights. You still see the cars very clearly. Driving home last night I could easily see some deer by the side of the road. My main expectation from these glasses was headlight glare. Mission accomplished! With more and more cars and SUVs using brighter headlights these days, this product is the answer to keep your vision sharp and avoid the instant blindness that often occurs when oncoming vehicles had brighter headlights today. I recommend these round night vision goggles with enthusiasm and I am very satisfied with my purchase and the price paid. Great work Duco!