Comparison of Clinical Outcomes After Cataract Surgery With and Without Capsular Tension Ring
- Conditions
- Cataract
- Interventions
- Device: Insertion of the capsular tension ring
- Registration Number
- NCT02183831
- Lead Sponsor
- Yonsei University
- Brief Summary
This study was set up to identify clinical outcomes including a refractive shift or change in IOL calculation accuracy and optical quality after Ophtec® capsular tension ring in the eyes without zonular instability.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 52
- age between 40 and 79 years
- no history of eye surgery or glaucoma
- a transparent central cornea
- pupil dilation at the preoperative examination of at least 6.0 mm
- absence of biomicroscopic signs of pseudoexfoliation
- normal fundus examination
- presence of ocular disease that might affect the visual outcome (e.g., color vision disturbance, chronic uveitis)
- presence of ocular disease that might affect contrast sensitivity function (e.g., glaucoma, maculopathy, high myopia)
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Capsular tension ring insertion group Insertion of the capsular tension ring The patients who underwent capsular tension ring insertion just before IOL implantation during cataract surgery
- Primary Outcome Measures
Name Time Method Best corrected visual acuity 1 month after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring Visual acuity measurement using refractive error correction
refractive error 1 month after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring Autokeratometry (KR-7100; Topcon, Tokyo, Japan) and manifested refraction were performed to examine refractive errors
Anterior chamber depth 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring obtained with a Scheimpflug imaging system (Pentacam; OCULUS Optikgeräte GmbH, Wetzlar, Germany)
Ocular aberrations 1month after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring measured using the ray-tracing aberrometer (iTrace, Tracey Technologies, Houston, TX, USA) at a pupil size of 5 mm in mesopic conditions, without pharmacologic dilatation
- Secondary Outcome Measures
Name Time Method constrast sensitivity 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring measured at five spatial frequencies (1.5, 3, 6, 12, and 18 Hz) using the Optec 6500 vision testing system
Best corrected visual acuity 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring Visual acuity measurement using refractive error correction
posterior capsular opacity grades 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring graded after dilation of pupil over 6 mm, based on slit lamp examination findings
refractive error 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring Autokeratometry (KR-7100; Topcon, Tokyo, Japan) and manifested refraction were performed to examine refractive errors
Ocular aberrations 3 months after capsular tension ring and intraocular lens implantation (cataract surgery) using capsular tension ring measured using the ray-tracing aberrometer (iTrace, Tracey Technologies, Houston, TX, USA) at a pupil size of 5 mm in mesopic conditions, without pharmacologic dilatation