The Marco OPD-Scan III is very useful – if you do a lot of refractive cataract surgery you can’t live without it. We use it pre-op on all patients and I look at spherical aberration, topography, K’s, angle kappa, etc. Shame one cannot get reimbursed for its use mostly, but we love it! For toric and multi-focal IOLs it’s an absolute MUST HAVE. The training by Marco is also secondary to none. We just bought our second OPD.