Hi, I just joined this site to get some professional opinion...
Can we actually mix 2 different materials for glasses..
OD: -0.50 CR39
OS: -4.00 1.60
Some opticians say yes, some no...
I know they have different abbe value, but some of my customers can not afford it and I need your opinion and recommendations.
Those are stock lenses, and I also want to know about progressive.
Please let me know about this.
Sincerely yours,