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The Role of Capsular Tension Rings in Intraocular Lens Stability in High Myopia Cataract Patients: A Prospective Self-Controlled Study

NCT07052825 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 120

Last updated 2025-07-07

No results posted yet for this study

Summary

Study Purpose:

This prospective, self-controlled clinical study aims to evaluate the impact of capsular tension rings (CTR) on intraocular lens (IOL) stability in high myopia patients undergoing bilateral cataract surgery. Each patient will receive CTR implantation in one eye, with the fellow eye serving as control. Postoperative outcomes, including visual acuity, refraction, IOL positioning, and visual quality, will be compared between eyes to assess the effectiveness of CTR.

Study Methods:

Eligible participants (axial length ≥ 26.0 mm) will undergo femtosecond-assisted phacoemulsification with identical IOLs implanted in both eyes. One eye will be randomly assigned to receive a CTR. All surgeries will be performed by the same surgeon. Follow-up will be conducted at 1 day, 1 week, 1 month, 3 months, and 6 months postoperatively. Assessments will include UCVA, BCVA, refractive error, anterior segment OCT, IOL decentration and tilt, and visual quality (iTrace).

Sample Size and Population:

A total of 60 patients (120 eyes) will be enrolled. Inclusion criteria include age ≥ 18 years and bilateral cataracts with high myopia. Exclusion criteria include other ocular diseases, history of severe ocular trauma, or poor visual potential. Patients will be stratified by axial length into three groups: ≤28 mm, 28-30 mm, and \>30 mm.

Study Procedure:

After informed consent and baseline examinations (including ocular biometry and imaging), patients will undergo surgery and be followed at specified intervals. All data will be managed securely. Comparative analysis between CTR and non-CTR eyes will be performed to evaluate the effect of CTR on IOL stability and visual outcomes in highly myopic cataract patients.

Conditions

  • High Myopia
  • Cataract

Interventions

PROCEDURE

CTR implantation

Phaco+IOL with CTR implantation

Sponsors & Collaborators

  • Jin Yang

    lead OTHER

Principal Investigators

  • Jin Yang · Fudan University

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-01-01
Primary Completion
2030-12-31
Completion
2030-12-31

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07052825 on ClinicalTrials.gov