Capsular tension rings offer no significant visual improvements in IOL surgery
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Eyes co-implanted with capsular tension rings during IOL surgery showed no visual or refractive improvements over eyes undergoing IOL surgery without capsular tension ring implantation, according to a speaker.
“Our data set and results led us to conclude that there were no statistically or clinically significant differences that were observed between eyes implanted with capsular tension rings and those that were not in the setting of routine and complicated elective cataract and refractive surgery,” Shafiq Rehman, MD, said at the virtual European Society of Cataract and Refractive Surgeons meeting.
Researchers compared uncorrected distance visual acuity for monofocal IOLs, uncorrected distance visual acuity for multifocal IOLs and deviation from predicted postoperative refraction in eyes undergoing IOL surgery with and without capsular tension ring (CTR) implantation, Rehman said.
The retrospective audit of electronic medical records included surgeries between July 2018 and October 2019. Twenty-eight patients underwent monofocal IOL surgery and were co-implanted with a CTR compared with 61 patients who underwent surgery without a CTR. Additionally, 305 patients underwent multifocal IOL surgery and were co-implanted with a CTR compared with 213 patients without a CTR.
In the monofocal IOL cohort, 21 of 28 patients with a CTR experienced at least 6/6 vision compared with 51 of 61 patients with no CTR. In the multifocal IOL cohort, 225 patients with a CTR experienced 6/6 vision compared with 152 of 213 patients without a CTR. The differences in visual outcomes for the multifocal and monofocal cohorts were not statistically significant, Rehman said.
Additionally, a CTR did not improve refractive outcomes within 0.5 D of the preoperative target in either the monofocal or multifocal cohorts, he said.
A subanalysis of IOL types did not show statistically or clinically significant differences in eyes with a CTR compared with those without a CTR.
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Rehman S. Short term visual and refractive intraocular lens (IOL) surgery outcomes with and without implantation of a capsular tension ring (CTR). Presented at: European Society of Cataract and Refractive Surgeons meeting; Oct. 2-4, 2020 (virtual meeting).
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