High Myopia Clinical Trial
Official title:
Influence of Capsular Tension Ring on IOL-capsular Complex After Cataract Surgery in Patients With High Myopia: a Clinical Observation Based on SS-OCT
The IOL-capsular complex is formed after cataract surgery and intraocular lens (IOL) implantation.Early postoperative mechanical wrapping of the anterior and posterior capsules plays a significant role in preventing IOL decentration and tilt, as well as formation of the IOL-capsular complex which reduces the incidence of posterior cataract opacity. Capsular tension rings were first introduced in the early 1990s for loosening and tightening the lens bag and maintaining the equatorial contour of the bag after cataract surgery.Today, capsular tension rings of many different designs are in use.The capsular tension rings can be used in eyes with fragile and split zonular fibers, as well as pseudoexfoliation, high myopia, Marfan syndrome, mature cataract and lens subluxation.The capsular tension ring reduces the incidence of decentration and tilt of the IOL by reducing capsular contraction. In addition, multi-focus IOL implantation combine with capsular tension ring result in smaller high-order aberrations in our eyes compared to cataract surgery with multi-focus IOL implantation alone.For patients with high myopia, they often have a longer axial length and a larger capsule diameter, which reduces the rotational stability of the IOL and may lead to tilt ,decentration and displacement of IOL.Currently, there is no literature guidance to compare the results of cataract surgery combined with or without capsular tension ring implantation in patients with high myopia.Our hospital has Swept-source Optical Coherence Tomography ( SS-OCT,Casia2, TOMEY, Japan), which can accurately photograph the process of IOL capsule bending and the changes of lens position after cataract surgery. SS-OCT can be used to evaluate the influence of capsular tension ring on the dynamic changes of IOL-capsular complex in patients with high myopia after cataract surgery.
The IOL-capsular complex is formed after cataract surgery and intraocular lens (IOL) implantation.Early postoperative mechanical wrapping of the anterior and posterior capsules plays a significant role in preventing IOL decentration and tilt, as well as formation of the IOL-capsular complex which reduces the incidence of posterior cataract opacity. Capsular tension rings were first introduced in the early 1990s for loosening and tightening the lens bag and maintaining the equatorial contour of the bag after cataract surgery.Today, capsular tension rings of many different designs are in use.The capsular tension rings can be used in eyes with fragile and split zonular fibers, as well as pseudoexfoliation, high myopia, Marfan syndrome, mature cataract and lens subluxation.The capsular tension ring reduces the incidence of decentration and tilt of the IOL by reducing capsular contraction. In addition, multi-focus IOL implantation combine with capsular tension ring result in smaller high-order aberrations in our eyes compared to cataract surgery with multi-focus IOL implantation alone.For patients with high myopia, they often have a longer axial length and a larger capsule diameter, which reduces the rotational stability of the IOL and may lead to tilt ,decentration and displacement of IOL.Currently, there is no literature guidance to compare the results of cataract surgery combined with or without capsular tension ring implantation in patients with high myopia.Our hospital has Swept-source Optical Coherence Tomography ( SS-OCT,Casia2, TOMEY, Japan), which can accurately photograph the process of IOL capsule bending and the changes of lens position after cataract surgery. SS-OCT can be used to evaluate the influence of capsular tension ring on the dynamic changes of IOL-capsular complex in patients with high myopia after cataract surgery. ;
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Completed |
NCT01658761 -
Surgical Outcome of Vitrectomy for Myopic Traction Maculopathy in Highly Myopic Eyes
|
N/A | |
| Enrolling by invitation |
NCT03666052 -
Shanghai Child and Adolescent Large-scale Eye Study -High Myopia Registration
|
||
| Completed |
NCT03294967 -
Effect of Caffeine on Ocular Circulation in High Myopes
|
N/A | |
| Not yet recruiting |
NCT05550740 -
Repeated Low-Level Red-Light Therapy for Shortening Axial Length
|
N/A | |
| Suspended |
NCT02915133 -
The Relationship Between Structure and Visual Function in Myopia Foveoschisis
|
||
| Not yet recruiting |
NCT05533450 -
A Study on the Efficacy and Safety of Multi-focal Scleral Contact Lens
|
N/A | |
| Not yet recruiting |
NCT05042856 -
To Evaluate IOL Position, Clinical Outcome of PanOptix in High Myopic Cataract Patients
|
N/A | |
| Completed |
NCT03266354 -
Changes of the Corneal Endothelial Cell Count After Artisan Phakic Intraocular Lens Implantation
|
||
| Recruiting |
NCT05201677 -
Improved Operation of Low Intraocular Pressure in Phacoemulsification for Patients With High Myopia Complicated With Cataract
|
N/A | |
| Completed |
NCT02169635 -
Macular Buckle With Three-armed Silicone
|
N/A | |
| Recruiting |
NCT03533647 -
Development and Pathological Changes of High Myopia Among Children and Adolescents in China
|
||
| Completed |
NCT06204211 -
Genetic Research on High Myopic Individuals in Northern China
|
||
| Active, not recruiting |
NCT05691296 -
The Monitoring and Intervention of Refractive Changes in Children and Teenagers in Tianjin
|
N/A | |
| Completed |
NCT03202485 -
Comparison Between TICL and ICL+AK for High Myopic Astigmatism
|
N/A | |
| Not yet recruiting |
NCT05768152 -
Repeated Low-Level Red-Light Therapy Shortens Axial Length
|
N/A | |
| Completed |
NCT00564213 -
Evaluation of the Prophylactic Use of Mitomycin C 0.02% to Inhibit Haze Formation After Photorefractive Keratectomy for High Myopia: 15 x 30 Seconds
|
Phase 4 | |
| Active, not recruiting |
NCT05803174 -
Screening and Identification of Biomarkers for High Myopia by a Rapid Method
|
||
| Completed |
NCT03174639 -
High Myopia Macular Hole and Retinal Detachment Treated With Double ILM Flaps
|
N/A | |
| Not yet recruiting |
NCT06264830 -
3D Visualization System in Highly Myopic Cataract Operation
|
N/A | |
| Recruiting |
NCT05850936 -
Effect of IOP Lowering on Progressive HM
|
N/A |