Chickie has 4 sets of goggles. As we have written before, she wears them every day when outside as she is day blind. ( cones do not function) The darkest lens you “made” with an added red filter help her see in fringe higher spectrum day periods. We replace them often as they scratch easily. So - 1. Disappointed you don’t make them anymore. And - 2. With today’s technology they should be made more scratch resistant.