TargetTalk

When I went to my optometrist for a shooting glasses prescription, I just asked for a front sight focal distance in my dominant eye and distance in my non-dominant eye. For me, it was a focal distance of 34 inches. I got a set of Rudy Project Rydon shooting glasses and it has been awesome!

Carbide smoker from Ray-Vin is excellent! But it's not the semi-permanent solution you're looking for. But I prefer a fresh sight blackening each range trip or event.

https://www.ray-vin.com/tools/smoker.htm