I hope Im doing this right,forgive me, its my first post.

I have never filled an Rx this extreme before.

-20.50 -4.00 x175
-20.50 -4.75 x005

Her last lenses were hyper aspheric 1.66 double concave. Ive been
told by my lab other options are Zeiss 1.70 and 1.67 blended myodisc.

Anyone want to share their opinion on the pros and cons of these options.

I am reluctant to change her into something else.I would like to know as much as I can going into this.

Thank you
Huddie