Correlation of Pseudophakic Intraoperative Aberrometry Readings to Manifest Refraction

Sunday, April 19, 2015: 3:56 PM
Room 4 (San Diego Convention Center)
William F. Wiley, MD
Shamik Bafna, MD

To analyze the intraoperative pseudophakic results in a consecutive series of eyes and correlate the pseudophakic results to the postoperative manifest refraction to determine the predictive power of pseudophakic readings to post-operative manifest refraction. To determine the relative usefulness of pseudophakic readings and whether it is reasonable to rely on pseudophakic measurements to help predict manifest refractions.  To determine value of surgical corrections on outlier readings that differ from aphakic intraoperative predictions.

Retrospective analysis of a series of 60 cases undergoing cataract surgery with intraoperative aberrometry guidance over a 2-month period. Intraoperative aphakic and pseudophakic readings were obtained.  Care was taken to control surgical variables for both aphakic and pseudophakic readings.  These readings were compared to each other and then compared to the postoperative manifest refraction.  Statistical analysis was done to determine which set of readings were more predicative for final manifest refraction. Furthermore pseudophakic outliers were analyzed to determine if immediate surgical intervention would have improved the refractive outcome.

The mean refractive deviation when comparing intraoperative aphakic to intraoperative pseudophakic readings was 0.29D with a standard deviation of 0.29.  85% of eyes showed less than 0.5D difference between aphakic and pseudophakic readings. The comparison to postoperative manifest refraction will be compiled over the next 30 days.

Intraoperative aberrometry aphakic and pseudophakic readings can be comparable with careful control of surgical variables.  Both readings can be useful to predict postoperative manifest refractions.