Reduction of Corneal Astigmatism in Toric IOL Implantation in Femtosecond Laser–Assisted Versus Traditional Cataract Surgery
Purpose
To compare pre and post operative astigmatism and refraction between an initial series of eyes undergoing femtosecond laser versus traditional cataract surgery with implantation of Toric lens.
Methods
This is a retrospective study that evaluated 39 consecutive eyes undergoing femtosecond laser-assisted cataract surgery and Toric lens implantation (LCS group) and compared them to 38 eyes that also received Toric lens implantation, but with manual cataract surgery (MCS group). The following parameters were then collected: patient characteristics, postoperative visual acuity, pre and postoperative refraction and cylinder, keratometry from IOL master and topography, and complications during surgery and 4 weeks postoperatively. The data was compared using two tailed t-tests.
Results
The difference between preoperative keratometry and postoperative cylinder was used to determine the change in astigmatism after surgery and then compared between the LCS and MCS groups. Keratometry obtained from both IOL master (p=0.087, 1.66±1.07 vs. 1.29±0.756) and topography (p=0.46, 1.47±1.15 vs. 1.3±0.847) showed trends that suggest the LCS group had a greater improvement in astigmatism than the MCS group, but no statistical significance. There was no significant difference in preoperative keratometry, postoperative visual acuity, pre and postoperative refraction, and patient demographic factors.
Conclusion
This study displays a greater reduction of astigmatism in patients who underwent laser cataract surgery compared to those who had traditional cataract surgery by comparing the difference between preoperative keratometry with postoperative cylinder between groups.