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Combined Phacotube vs Phacotrabeculectomy:A Randomized Controlled Trial

NCT ID: NCT00273221

Last Updated: 2008-05-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE4

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-07-31

Study Completion Date

2006-07-31

Brief Summary

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The aim of this study is to compare the effectiveness and safety of combined phacoemulsification, posterior chamber intraocular lens implantation , trabeculectomy (phacotrabeculectomy) with phacoemulsification, intraocular lens implantation and glaucoma drainage device(phacotube) in the early and intermediate control of intraocular pressure(IOP) in patients with primary open angle and angle closure glaucoma.

Detailed Description

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Studies have pointed out racial differences in the outcome of conventional filtration surgery. Glaucoma drainage implants have been found to do well in Asian eyes but no randomized controlled trial is available to support this claim. Objectives: It is the aim of this study to compare the effectiveness and safety of combined phacoemulsification, posterior chamber intraocular lens implantation , trabeculectomy (phacotrabeculectomy) versus phacoemulsification, intraocular lens implantation and glaucoma drainage device(phacotube) in the early and intermediate control of intraocular pressure(IOP) in patients with primary open angle and angle closure glaucoma. The secondary objective is to look into the post-operative complications encountered in phacotrabeculectomy and phacotube including the additional interventions (laser suture lysis, bleb needling, antimetabolite injections, etc.) applied in both procedures being studied Study Design. Randomized controlled trial. Methods. A total of 50 Asian subjects, 21 years old and above diagnosed with primary open/angle closure glaucoma, inadequately controlled by laser and medical treatment, with significant cataract and no previous eye surgery will be randomized to two types of combined procedures, phacotrabeculectomy and phacotube. Primary outcome measure is intraocular pressure and secondary outcome measures will be visual acuity, anterior chamber depth, visual field stability or progression, glaucoma medication requirement, operative and post-operative complications and additional, secondary interventions(e.g. laser suture lysis, bleb needling, 5-FU injections, anterior chamber reformation). All subjects will be followed up for a period of 1 year.This trial may define the role of GDI as a primary surgical option for Asian patients and the first randomized clinical trial in Asia to compare two combined procedures for glaucoma and cataract namely phacotrabeculectomy and phaco-glaucoma drainage implant surgery.﷡

Conditions

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Glaucoma Cataract

Keywords

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Glaucoma Cataract

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Interventions

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Glaucoma Implant Surgery

Intervention Type PROCEDURE

trabeculectomy

Intervention Type PROCEDURE

phacoemulsification

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

Ø 21 years old and above Ø Primary Open Angle Glaucoma with Shaffer grade 2 or better for 360 degrees Ø Primary Angle Closure Glaucoma (occludable angles +/- PAS) Ø Inadequate IOP control despite maximum medical treatment (using at least 2 types or more antiglaucoma medications) and/or laser treatment in the presence of glaucomatous optic neuropathy on optic nerve head evaluation and corresponding visual field findings Ø Visually significant cataract with visual acuity of less than or equal to 6/12 Ø No corneal disease Ø Willing to be followed up for 1 year duration post-operatively Ø Informed consent

Exclusion Criteria

* Ø Secondary Glaucoma (Uveitic, Neovascular, traumatic, Iridocorneal Endothelial Syndrome); Congenital Glaucoma Ø Severe ocular disease like Proliferative Diabetic Retinopathy, Age-related Macular Degeneration Exudative type Ø Prior intraocular surgery(in the study eye) Ø Patients with small central island and temporal field remaining on perimetry Ø One-eyed patients or fellow eye with visual acuity of counting fingers (CF) or worse
Minimum Eligible Age

21 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National University Hospital, Singapore

OTHER

Sponsor Role lead

Principal Investigators

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Paul TC Chew, A/Prof

Role: PRINCIPAL_INVESTIGATOR

National University Hospital, Singapore

Locations

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National University Hospital

5 Lower Kent Ridge Road, , Singapore

Site Status RECRUITING

Countries

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Singapore

Central Contacts

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Paul TC Chew, A/Prof.

Role: CONTACT

Phone: 67725317

Email: [email protected]

Maria Cecilia D Aquino, MD

Role: CONTACT

Phone: 67725317

Email: [email protected]

Facility Contacts

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Paul TC Chew, A/Professor

Role: primary

Maria Cecilia D Aquino, MD

Role: backup

Other Identifiers

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DSRB-A/05/196

Identifier Type: -

Identifier Source: org_study_id