opography Interpretation: Red Flags for Cataract Surgeon

Dr William Trattler

Meeting:  2012 RANZCO


Date: 28 Nov 2012


Session Time: 11:00 am - 11:30 am

This talk will focus on how to effectively interpret Corneal Tomography and Corneal Topography for patients scheduled for cataract or refractive cataract surgery.Corneal topography and corneal tomography (Pentacam/Galilei) are important tests to perform prior to performing corneal refractive surgery. These tests are used to determine whether patients are appro-priate candidates for LASIK or surface ablation. Over the past decade, improved technology has helped us improve our ability to identify patients that are at increased risk for post-LASIK ectasia. However, interpreting topography is still subjective. During the lecture, keys to evaluating these tests will be provided that will potentially improve one ’ s ability to accurately interpret these maps. A discussion of objective testing parameters that can be used prior to corneal refractive surgery will be discussed.

The lecture will also focus on the importance of preoperative corneal topography prior to routine cataract surgery. Preoperative topography may uncover patients with normal slit lamp appearance of the cornea who have an abnormal corneal shape consistent with mild to moderate keratooconus or Pellucid. Corneal topography is also important for patients with significant astigmatism who will be undergoing corneal relaxing incisions or toric IOLs. Corneal topography is also very effective at identifying cataract patients who have a rapid tear break up time who require treatment prior to acquiring corneal keratometry readings for use with corneal biometry.