equation for inducing prism in steep base curved lenses

[CaseyConrad]

I have a customer who wears a Rudy Project sunglass insert that has extreme facial wrap and sits on top of his eyes. I was hoping that someone knew the mathmatical equation that can help me induce prism to offset this extreme wrap. I know Oakley uses such an equation because they used it on my sunglasses. It must take into consideration vertex, bc, power, ect....HELP!

[Jo]

Casey,

Welcome to OptiBoard!

Try this thread:
http://www.optiboard.com/forums/show...ht=wrap+frames

I believe there are a few other threads touching on wrap frames try searching OptiBoard here: http://www.optiboard.com/forums/search.php?s=

[nawsman]

I have been reading all the threads about tilt, wraparound frames. still
confused. I been looking for a simple formula for calulating/adjusting the RX for wrap around frames. I'm no mathmatition but I can figure simple formulas give the values. can anyone help, is there a article written where I may read. I am a simple Lab manager, with limited resources.

[Fezz]

Hey NawsMan,

Here is a great thread discussing wraps and wrap formulas. I think what you will learn...is that there is not a *simple* formula.

http://www.optiboard.com/forums/show...hlight=formula

[Fezz]

Here is another one!

http://www.optiboard.com/forums/show...ley%27s+secret

See...................no *simple* answer!

:cheers::cheers::cheers:

[obxeyeguy]

http://www.opticampus.com/tools/tilt.php