Right. Lots of comments in this thread and I can understand not using the coloured pinlock a at night, but would have thought the clear was ok,(I have not noticed any problems with my clear pinsert), so I sent a support question to Pinlock the response is below. Thank you very much for your e-mail. The clear Pinlock lenses are absolutely suitable to use at night, it is the other way around for the Dark Smoke lenses. It could be not convenient to use those at night because visibility then is really low. My advice for you is if you are struggling with changing the lenses then buy a Protectint lens, because this insert adjusts itself to the amount of UV-light. So at night it will be clear and over day it changes to from light smoke to dark smoke that depends on the amount of UV-light, if the sun is shining of course. I hope this informed you enough, should you have any other questions please feel free to contac tme again. Best regards, Luca de Raad Customer service