posted by Can anyone help? .
A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index 1.56. Which CR39 tool must now be used to work the front surface?
Hi, Need Help and Can anyone help. There will be someone to answer your question shortly. Just be patient. I have to be patient too when i want someone to help me. :)
BTW hope you get you question answered.
BTW try not to post the same question over and over because they will sometimes get removed.
First time I have used this-didnt think my posts where showing!lol
lol :) I do that sometimes