Abstract
Background
To evaluate the astigmatism after cataract surgery between the use of intraoperative aberrometer plus image-guided system (VLynk) and image-guided system alone (Verion) in patients with significant lens opacity.
Methods
This is a retrospective cohort study performed at First-Brightness Eye Clinic, Taichung, Taiwan. Patients with significant lens opacity whom received cataract surgery with VLynk were compared to the control group receiving surgery with Verion. Main outcomes included the corrected distance visual acuity (CDVA), astigmatism, spherical equivalent (SE) status and the predicting factor for less astigmatism in the two groups. The generalized estimated equation (GEE) was used to produce the adjusted odds ratio (aOR) and corresponding 95% confidence interval (CI).
Results
73 patients were enrolled in the study group (VLynk); 76 individuals constituted the control group (Verion). Preoperative and postoperative CDVA between both groups were similar (all P > 0.05). The preoperative cylinder power, preoperative SE and estimated SE were statistically insignificant between the VLynk and Verion groups (all P > 0.05). The postoperative cylinder power (P = 0.002), postoperative SE (P = 0.004) and difference between real SE and estimated SE (P = 0.001) were significantly lower in the VLynk group. Implantation of toric IOL was associated with less astigmatism in the both groups (both P < 0.05). Longer axial length (P = 0.013) and higher central corneal power (P = 0.023) were correlated to higher astigmatism in the Verion group.
Conclusion
VLynk is correlated with better postoperative astigmatism control and predictability compared to Verion in patients with significant lens opacity.