Factors Affecting Rotation of Toric IOLs After Cataract Surgery
Purpose
To evaluate the factors affecting the rotation of toric IOLs after cataract operation.
Methods
This study included 350 eyes that underwent cataract operation with toric IOLs (Alcon) implantation. To evaluate the effect of viscoelastics, 100 eyes underwent cataract operation using Healon GV(AMO, more cohesive agents) while the other 100 eyes underwent using DisCoVisc (ALCON, less cohesive agents). To evaluate the effect of preoperative refractive error on IOL rotation, the 1st group included hyperopic eyes (hyperopic group, 50 eyes), while the second group included emmetropic to minus 6 diopters eyes (benign myopic group, 50 eyes). The 3rd group included high myopic eyes of more than minus 6 diopters (high myopic group, 50 eyes).
Results
The rotational movement of IOL was measured postoperatively, 1 week, 1 month and 3 months after operation in all cases. No significant difference was found between the Healon using group and DisCoVisc using group. Among groups with different preoperative refractive error, the high myopic group of more than minus 6 diopter eyes showed more rotational movement of toric IOLs when compared to the other two groups.
Conclusion
In high myopic eyes, the implantation of slightly bigger IOLs should be considered due to the more rotational movement of toric IOLs.