One other possibility to mention and I saw it no where in the post, but would you be possibly using an MR3 coater or mini? I went into a lab about a month ago and they were having tons of issues..first told me power and than when they sent me some samples I was locating tons of aberrations off center... called and asked them to check powers coming right off the line BEFORE coating.. and tada..it was the backside coater...had them dip the lens in heated distilled water in the tint unit and the "power problem" was solved....
If it is a "lap" issue you should be seeing a pattern to the lens powers vs.. index ... if you did than you could always just run a compensation chart to set you cross/base and tools or just let the compensated tool bring it in...more chance of swirls/waves if you do not compensate both cut and tool though.. sometimes spending a lot to solve a little can be corrected with a "free" work around..
Poor guys answer to buying laps in 6ths..or even 10ths...
Just a thought of something I did not see mentioned.....
Jeff T.
Bookmarks