Formula for base curve compensation

[johnnyoptical]

Hello All,
At one time I had a formula that would allow me to take a standard single vision rx and put in on a higher than standard base curve (specifically for high rap sunglasses) while altering the p.d. and putting in prism to compensate. Does this formula sound familiar to anyone. I am not a math whiz, but the formula was easy enough to work. I got lazy, allowing my lab to do all the math for me, but now have changed workplaces and don't have that luxury. Time to step back up and be a real optician again. Can anyone help here? Thanks.

Johnnyoptical

[shanbaum]

Hello All,
At one time I had a formula that would allow me to take a standard single vision rx and put in on a higher than standard base curve (specifically for high rap sunglasses) while altering the p.d. and putting in prism to compensate. Does this formula sound familiar to anyone. I am not a math whiz, but the formula was easy enough to work. I got lazy, allowing my lab to do all the math for me, but now have changed workplaces and don't have that luxury. Time to step back up and be a real optician again. Can anyone help here? Thanks.

Johnnyoptical

There are a couple of wrap compensation programs available for download here on OptiBoard; why not use one of those?

[johnnyoptical]

Where do I find these formulas? I have been away for a while and was unaware that I could download anything.

:hammer:

[shanbaum]

Where do I find these formulas? I have been away for a while and was unaware that I could download anything.

:hammer:

http://www.optiboard.com/forums/showthread.php?t=19366

[johnnyoptical]

Thank you so much for the direction. I tried it out and it works beautifully! I am sure I will use this frequently. More annoying questions to come!

:D