Clinical Trials Logo

Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT03062085
Other study ID # NSFC-81670835
Secondary ID
Status Recruiting
Phase
First received
Last updated
Start date January 1, 2015
Est. completion date December 31, 2040

Study information

Verified date April 2024
Source Shanghai High Myopia Study Group
Contact Yi Lu, M.D.
Phone (86)021-64377134
Email luyieent@163.com
Is FDA regulated No
Health authority
Study type Observational [Patient Registry]

Clinical Trial Summary

The purpose of this study is to evaluate the long-term visual outcome of the cataract surgery using a large-scale and comprehensive database of high myopic cataract and age-related cataract patients. The investigators will further investigate into the various genetic and environmental factors that may contribute to the pathogenesis of high myopic cataract.


Description:

High myopic cataract (HMC) has become a major high-risky type of cataract in China, which accounts for nearly 30% of cataract in recent years. Compared to age-related cataract, HMC is characterized with earlier onset, severer lens opacities, higher incidence of vitreoretinopathy and postoperative complications compared to age-related cataract(ARC). The main purpose of this study is to evaluate the long-term visual outcome of the cataract surgery using a large-scale and comprehensive database of high myopic cataract, when compared to those age-matched ARC patients. On the other hand, due to the lack of research in the pathogenesis of HMC, it is difficult for the investigators to precisely evaluate its risk and prognosis, and to improve its prevention and treatment. The previous study of investigators majored in a large-sample analysis on the clinical features and related genes of HMC. After preliminary screening, eight genes were selected for further investigation: 1) genes related to pathogenesis of HMC: CRYAA/ GSTP1/ TXNRD2;2) genes related to vitreoretinopathy: MCP1/ VEGFA/ CFH; 3) genes related to postoperative complications: TGFB2/ CERS2. In the present study, in order to establish a risk model of HMC from the aspect of precision medicine, the investigators are preparing to set up a comprehensive clinical database for further sequencing of selected genes (including exons, promoters, 5' UTR and 3' UTR sequences) on a large scale, to intensively investigate into the sites and functions of single nucleotide polymorphism (SNP) correlated with clinical features of HMC. The research aim to evaluate the long-term visual outcome of the cataract surgery using a large-scale and comprehensive database of high myopic cataract, to thoroughly illustrate the influence of HMC-related genes to its prognosis and to elucidate the pathogenesis of HMC, for further promotion in the disease prevention and prognosis as well.


Recruitment information / eligibility

Status Recruiting
Enrollment 60000
Est. completion date December 31, 2040
Est. primary completion date December 31, 2030
Accepts healthy volunteers No
Gender All
Age group 20 Years to 100 Years
Eligibility Inclusion Criteria: - Clinical diagnosis of cataract - Must be able to cooperate with the ophthalmic examination Exclusion Criteria: - Clinical diagnosis of mental illness - Mentally disabled

Study Design


Intervention

Other:
Cataract
The genetic and environmental factors concerning to the pathogenesis of cataract in the three groups.

Locations

Country Name City State
China Eye and ENT Hospital of Fudan University Shanghai Shanghai

Sponsors (2)

Lead Sponsor Collaborator
Shanghai High Myopia Study Group Eye & ENT Hospital of Fudan University

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Other Difference in the surgical procedure of three groups To compare the difference in the surgical procedure of three groups. Recorded on the surgery day for further analysis
Other Difference in the Diagnostic test of three groups To compare the difference in the diagnostic test of three groups. Recorded before the surgery day for further analysis
Other Difference in the complications of the cataract surgery of three groups To compare the prevalence of complications of the cataract surgery in HMC,ARC and ametropic cataract patients. Follow-up until five years after surgery
Primary Differences in the clinical phenotypes and visual outcomes of high myopic cataract patients Cataract type and severity of high myopic cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements. Follow-up until five years after surgery
Primary Differences in the clinical phenotypes and visual outcomes of age-related cataract patients Cataract type and severity of age-related cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements. Follow-up until five years after surgery
Primary Differences in the clinical phenotypes and visual outcomes of ametropic cataract patients Cataract type and severity of ametropic cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements. Follow-up until five years after surgery
Secondary Genetic diversity based on biological specimen samples of three groups Sequencing of selected genes (including exons, promoters, 5' UTR and 3' UTR sequences) on a large scale to intensively investigate into the sites and functions of single nucleotide polymorphism (SNP) correlated with clinical features of HMC, compared to age-related cataract and ametropic cataract patients. Analyzed within six months after surgery
See also
  Status Clinical Trial Phase
Completed NCT04685538 - Chloroprocaine 3% Gel Eye Drop as Topical Anestheticsin Phacoemulsification. Phase 3
Recruiting NCT06060041 - IC-8 Apthera IOL New Enrollment Post Approval Study
Recruiting NCT05518539 - Evaluation of Quality of Vision and Visual Outcomes With Bilateral Implantation of the Clareon PanOptix Intraocular Lens
Recruiting NCT05271942 - Tilt and Tumble vs Divide and Conquer - a Unique Comparison of the Two Cataract Surgery Methods N/A
Active, not recruiting NCT04778501 - PMCF Study on Monofocal Toric IOL (PODEYE TORIC) in Asia N/A
Completed NCT05062564 - Efficacy of LipiFlow in Patients Affected by Meibomian Gland Dysfunction in Reducing Post-cataract Surgery Dry Eye N/A
Completed NCT03751033 - Influence of DisCoVisc Ophthalmic Viscosurgical Device (OVD) on Intraoperative Aberrometry Readings N/A
Completed NCT02529488 - Investigation of AcrySof® IQ PanOptix™ Presbyopia-Correcting Intraocular Lens (IOL) Model TFNT00 N/A
Completed NCT04539548 - A Study Assessing the Safety and Efficacy of Dextenza® for the Treatment of Ocular Pain and Inflammation Following Surgery for Pediatric Cataract Phase 3
Completed NCT03740659 - Evaluation Of Aqueous Humor Of Levofloxacin-Dexamethasone Eye Drops And Of Its Components In Patients Undergoing Cataract Surgery Phase 2
Completed NCT03494257 - Effect of Fixed Brinzolamide-brimonidine Combination on Intraocular Pressure After Phacoemulsification N/A
Completed NCT05119127 - Rotational Stability of Acrysof IQ Vivity Extended Vision Toric IOL and Refractive Visual Outcome. N/A
Active, not recruiting NCT04271709 - Manhattan Vision Screening and Follow-Up Study (NYC-SIGHT) N/A
Recruiting NCT03713268 - Intraoperative OCT Guidance of Intraocular Surgery II
Completed NCT03739528 - Levo-Dexa vs. Tobra+Dexa for Prevention and Treatment of Inflammation and Prevention of Infection in Cataract Surgery Phase 3
Completed NCT02888210 - A Study Assessing Safety and Efficacy of MD-15 Intraocular Lens in Patients With Aphakic Eye After Cataract Surgery Phase 3
Completed NCT03356847 - Evaluation of the Rotational Stability of the Monofocal SISA Implant Following Cataract Surgery N/A
Completed NCT04332640 - Clinical Evaluation of the Next Generation Phaco System N/A
Recruiting NCT03638726 - Subconjunctival Atropine and Intracameral Epinephrine for Pupil Dilation in Phacoemulsification Phase 4
Completed NCT03050697 - Evaluation of the Safety and Performance of the HARMONI® Toric Lens N/A