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Effect of Co-Implantation of a Capsular Tension Ring on Clinical Outcomes after Cataract Surgery with Monofocal Intraocular Lens Implantation

 Hyun Ju Park  ;  Hun Lee  ;  Do Wook Kim  ;  Eung Kweon Kim  ;  Kyoung Yul Seo  ;  Tae-im Kim 
 Yonsei Medical Journal, Vol.57(5) : 1236-1242, 2016 
Journal Title
 Yonsei Medical Journal 
Issue Date
Aged ; Cataract/physiopathology ; Cataract Extraction* ; Contrast Sensitivity ; Female ; Humans ; Lens Implantation, Intraocular/instrumentation* ; Male ; Middle Aged ; Postoperative Period ; Prospective Studies ; Treatment Outcome
Capsular tension ring ; hyperopic shift ; monofocal IOL ; ocular aberration
PURPOSE: The objective was to evaluate the effect of co-implantation of a preloaded capsular tension ring (CTR) and aberration-free monofocal intraocular lens (IOL) on clinical outcomes and visual quality after cataract surgery. MATERIALS AND METHODS: Patients who underwent cataract surgery were randomized into two groups that were implanted with a CTR and IOL (group 1, 26 eyes) or an IOL only (group 2, 26 eyes). At 1 and 3 months after surgery, visual acuity, refractive errors, refractive prediction errors, ocular aberrations, and modulation transfer function (MTF) were analyzed. At 3 months postoperatively, anterior chamber depth (ACD) and contrast sensitivity were evaluated. RESULTS: Group 1 showed greater hyperopic shift, which caused the refractive prediction error at 3 months after surgery to be significantly different between the two groups (p=0.049). Differences in ACD between the preoperative and postoperative periods tended to be greater in group 1 than in group 2. At 3 months postoperatively, internal MTF values at 20, 25, and 30 cycles per degree were significantly better in group 1 than in group 2 (p=0.034, 0.017, and 0.017, respectively). Contrast sensitivity showed comparable results at almost all spatial frequencies between the groups. CONCLUSION: Regarding visual acuity and quality, both groups showed comparable results. Co-implantation of a CTR and aberration-free monofocal IOL was associated with hyperopic refractive outcomes. Surgeons should consider the position of the IOL when planning co-implantation of a CTR and IOL.
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Do Wook(김도욱)
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Park, Hyun Ju(박현주)
Seo, Kyuong Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
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