Refractive Results of Toric IOL Implantation With and Without Intraoperative Aberrometry
Narrative Responses:
Purpose
Evaluate the refractive results of cataract surgery with toric IOL implantation before and after implementation of intraoperative aberrometry
Methods
Results for 32 eyes treated without intraoperative aberrometry were compared to those of 25 eyes treated after the introduction of intraoperative aberrometry (ORA System, WaveTec Vision). Implantation of a toric IOL (Acrysof, Tecnis, or Trulign torics, various models) was planned for all eyes. Comparisons of uncorrected visual acuity (UCVA) was limited to a subset of eyes targeted for distance with BCVA of 20/20. Primary outcome measures include residual cylinder, reduction of cylinder, distance UCVA and mean absolute value of the prediction error. The percentage of eyes in which the IOL power was altered following ORA refraction will also be reported.
Results
In the non-ORA arm, 18 of 19 (82.4%) of eyes had distance UCVA of 20/25 or better. In the ORA arm, 18 of 19 (94.7%) of eyes were 20/25 or better. Postoperative residual cylinder of the entire group was ≤ 0.50 D in 53.1% of the eyes implanted before intraoperative aberrometry was introduced vs. 88.0% of the eyes implanted using intraoperative aberrometry. One eye in the ORA arm received a non-toric IOL after aphakic refractions showed a toric lens was not necessary.
Conclusion
The accuracy of toric IOL power selection and positioning is enhanced by the use of intraoperative aberrometry, resulting in less residual error and better uncorrected distance visual acuity after surgery.