Quite often during a ride my sunglasses start to give me pain on both sides of my head behind my ears. The only way to alleviate the pain is to remove my eyewear, which obviously I'd prefer not to do. I have tried different glasses and some are worse than others in the rate at which the pain starts. The ones I have at the moment have the lightest fit but still cause problems on rides more than 90 minutes or so long.
Anyone else get this and any ideas what this pain is and any thoughts on how to get rid?