Douglas D. Koch, MD

Upgrades to intraop aberrometer enhance surgical feedback
Upgrades to intraop aberrometer enhance surgical feedbackA sophisticated integrated formula for IOL power prediction is the featured capability in upgrades to Clarity Medical Systems’ intraoperative wavefront aberrometer.
How the cornea contributes to IOL power calculationUnder the best of circumstances—meaning when cataract surgery is performed in an eye with a normal cornea by expert hands and with use of an advanced IOL power calculation formula—the achieved refractive outcome will be more than 0.5 D off target in 1 out of every 11 eyes.
Optimizing cataract outcomes when keratoconus is present
Optimizing cataract outcomes when keratoconus is presentPatients with keratoconus pose unique challenges with IOL calculations.
Toric IOLs: Factoring in posterior corneaThe ratio of the anterior to posterior corneal curvature is not constant for astigmatism. By factoring in the contribution of the posterior cornea based on population data, the Baylor toric IOL nomogram can improve surgical outcomes following toric IOL implantation.