Any suggestions for prescriptions? I'm getting older and my eyesight is getting worse(go figure). I use a moderate power for near, a little bit for far, and have slight astigmatism in both eyes. It sounds horrible when I write it down like this, but it's not terrible. My current glasses are progressive ground and this plays hell with my front sight picture based on my shooting position. Here's my question, would a single vision prescription be helpful. These would be just for range use with most shooting done between 5 and 25 yards.