So; can I get some feedback on Prism Thinning? We order with a lab called Precision Optics. We have had several prism induced jobs come in. Now it is my understanding that for instance if you have a Progressive Lens that is marked up and you neutralize the RX and get 1.00 BASE UP OU that it passes inspection because Prism is equal. If you have OD with 1.00 BASE UP and OS with 1.00 BASE DOWN does it fail? We had 15 jobs come in this week that we failed because of Prism induced in different directions. The Lab says this is due to Prism Thinning. Which I understand but if Prism is in different directions I would think that it does not pass inspection. Any input appreciated.