Long-Term Outcomes of Corneal Astigmatism After Cataract Surgery
Purpose
To report the long-term outcomes in corneal astigmatism after cataract surgery.
Methods
The study comprised50eyes of patients underwent with cataract surgery from Jan2000to Jan 2004. All eyes received a complete ophthalmological examination and keratometer measurement at preoperative, 2 months and 10 years postoperatively. Only those eyes that underwent a follow-up of 10 years or longer from the time of cataract surgery were enrolled.3.0mm-clear corneal incisions were made at the temporal location.Corneal power vector wascalculated to obtain the change of corneal astigmatism with advancing age.
Results
The mean age of patients was 56.72± 12.83years (range, 18–75 years), and 65.0% of the patients were women. The corneal J0 vector value changed significantly between preoperatively and 2 months postoperatively in all patients (p<0.05). The SIA was 0.58 D @ 90 degrees. However, the corneal J0 vector valuedid not change significantly at 10 years postoperatively when compared to 2 months postoperatively(p<0.05). The long-term change of corneal astigmatism was 0.11 D @ 39 degrees between 2 months and 10 years postoperatively.
Conclusion
Corneal astigmatism in patients underwent cataract surgery did not show a long-term against-the-rule change with advancing age. These results provide useful information when planning a toric intraocular lens implantation in patients with corneal astigmatism.