How do you approach IOL calculations and selection in patients with keratoconus based on disease severity?  

I usually do these with the consultation of our cornea and contact lens colleagues. Key question. What is the likelihood of PK? If no PK, are they planning to wear CL post op? If they are likely getting PK after CE, then I get a reasonable K value post-transplant from our cornea service, or have t...

Formulas: I like using the Barrett True-K formula. Lenses: I do not recommend multifocals or extended depth of focus. The keratoconus already induces optic aberrations, so placing those lenses might add to it. If they are getting PK, I like to wait for the PK first, and we can do the cataract late...