Retrospective Review of Incidence of Abnormal Corneal Topography in Patients Scheduled for Cataract Surgery

Friday, April 25, 2014
KIOSKS (Boston Convention and Exhibition Center)
William B. Trattler, MD, Center For Excellence In EyeCare, Miami, FL, USA
Brian Frank Miami, FL, USA
Shannon E. McCabe Rootstown, OH, USA

Narrative Responses:

Purpose
To determine the incidence of abnormal topography in patients scheduled for cataract surgery.

Methods
400 consecutive topographies of patients that underwent cataract surgery at a single center by a single surgeon were evaluated in a masked fashion.  The reviewer was provided with the topography from a single eye with no additional information, and required to classify the topography into normal, FFKC, Pellucid, keratoconus, post-myopic refractive surgery, post-hyperopic refractive surgery, or irregular astigmatism (such as caused by dry eyes).

Results
A total of 400 topographies were reviewed in a masked fashion with no additional information provided. A total of 30.7% were classified as "not normal."  8.7% were classified as significant irregular astigmatism consistent with dry eye, EBMD, or another cause.  5.7% were classified as having mild asymmetric astigmatism.  5.5% were classified as FFKC,  Keratoconus or Pellucid pattern. 2.7% had superior steepening consistent with superior FFKC or superior keratoconus.  8% had topographic maps consistent with previous corneal refractive surgery.  Only 69.3% were classified as being "not abnormal".

Conclusion
A high prevalence of abnormal topography is present in patients undergoing cataract surgery.