I have been working for over 21 years in manufacturning and have had to wear safty glasses in my job. I have noticed the last couple of years the glasses provided by our company have changed and they seem to be worse, I see better with them off. I will be looking for a better pair to buy on my own. I am thinking of going to the eye doctor to get some good ones that don't adjust what I see but make eye strain go away. I do believe they have altered my eye sight, not for the better.View Thread