Intraoperative aberrometry improves refractive outcomes with cataract surgery

Session Details

Session Title: Cataract Surgery/ Equip/ IOLs

Session Date/Time: Sunday 14/09/2014 | 14:30-16:00

Paper Time: 15:33

Venue: Capital Hall B

First Author: : M.Ahmed UK

Co Author(s): :    N. Smith   K. Waltz   B. Wahl        

Abstract Details

Purpose:

To compare the outcomes of cataract surgery achieved with standard topography and optical biometry vs intraoperative aberrometry.

Setting:

Private ophthalmology clinic and day surgery center in Indianapolis, IN

Methods:

Since August 2012, our routine has been to use intraoperative aberrometry for IOL determination. A complete IOL calculation is prepared prior the day of surgery with topography and optical biometry. On the day of surgery, a separate IOL calculation is obtained with intraoperative aberrometry. The final lens choice is made by the surgeon on the day of surgery. In this study, the final refractive outcome was compared at the end of post-operative period and, retrospectively, the two different IOL calculation methods were compared. The more accurate IOL calculation method was noted for each case. The results were grouped into 5 roughly equal time frames of 3 months for analysis. An odds ratio was developed to measure the relative accuracy of each method.

Results:

A ratio was created to compare which choice was more accurate in predicting the IOL power, either the topography and optical biometry or the intraoperative aberrometry. The ratio for each time was created by dividing the number of times the intraoperative aberrometry was more accurate by the number of times the topography and optical biometry was more accurate. The results for predicting the SE most accurately for each 3 months, in ratio form, were 2.00, 1.43, 1.60, 1.69, & 6.00, respectively. The results for predicting the toric power most accurately for each 3 months, in ratio form, were 0.25, 1.25, 1.11, 2.33, & 2.50, respectively. The results were significant for an improvement in the relative accuracy of the intraoperative aberrometry over the 5 sequential, 3 month time frames.

Conclusions:

There was clear evidence of a learning curve with intraoperative aberrometry over the 5 sequential, 3 month time frames. The relative accuracy of the IOL outcomes improved more over time in the intraoperative wavefront group as compared to the topography and optical biometry group suggesting a learning effect for the intraoperative aberrometry group.

Financial Interest:

One or more of the authors... has significant investment interest in a company producing, developing or supplying product or procedure presented, One or more of the authors... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented