I know that there are glasses you can wear that minimize glare and sharpen your vision by blocking out the blue colors.I have heard of people who go hunting or target shooting using amber colored glasses because it helped them to see better. We all saw Earl using them and obviously if it worked he would still be using them. I saw an ad on TV for these bad boys and was curious if any of you had used non prescription glasses for shooting pool. http://www.seen-on-tv.ws/mail-order/hd-vision.html