Hi all,
This is my first post, so please be kind (I graduated 5 years ago, so my ophthalmic optics knowledge is a little rusty).

With the vertex compensation formula Dc=D/(1-dD) where Dc is the compenssated rx, D is the original rx and d is the vertex change, how would I adjust it in a non-air medium (eg if I submerged the lens in water)?

Thanks in advance
steff