They work. Surprising. I have tried three other brands of myopia sunglasses, and two out of three work well but are oversized. I normally have worn a child's eyeglasses before, so my head is a bit small for the brain inside (LOL).These look like a men's pair of sunglasses, and they are still oversized for my face, but they actually fit better than the large oversized plastic driving/myopia/distance glasses I have found on the Zon. The metal feel may take some getting used to, since I feel them digging into my nose. However, they don't slide down as much as the plastic frames do.What I noticed upon first drive:° Details are definitely clearer. Text on license plates look more defined.° The gray or black sunglass is not as dark as the usual sunglasses in bright sun with no clouds. Ouch.° I could really use some polarization. The sunglasses don't protect me against glare, especially in bright sun.