Measurement of Ocular Tensional Fluctuation by Triggerfish Lens Before and After Cataract Surgery in Patients With Exfoliative Glaucoma (TRIGGERFISH)

June 5, 2026 updated by: University Hospital, Brest

Glaucoma is a very frequent disease in Brittany. In glaucoma the retinal ganglion cells and their axons slowly die with visible changes at the optic nerve head (cupping). Without early diagnosis and effective treatment or with delayed treatment decrease of visual acuity or blindness become.

In secondary pseudoexfoliation glaucoma grayish-white deposits of abnormal proteins are found on all surfaces of eye irrigated by the aqueous humor. The deposits of PEX material inside the trabecular meshwork decrease aqueous humour outflow and the intraocular pression raise. The exfoliation material is found on the surface of the lens capsule with frequent developement of nuclear cataract . After cataract surgery the intra ocular pressure (IOP) decrease.

Some recent study have found decreasing ocular volume variation associated to IOP fluctuation in night after cataract surgery in normal pressure glaucoma patients. In our study we want see if it's the same thing in pseudoexfoliation glaucoma patients.

Study Overview

Status

Terminated

Conditions

Study Type

Observational

Enrollment (Actual)

6

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Brest, France, 29609
        • CHRU de Brest

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patient with exfoliative glaucoma and cataract

Description

Inclusion Criteria:

  • Adult
  • Exfoliative glaucoma
  • Patient who need cataract surgery
  • Patient agree with study

Exclusion Criteria:

  • Monophtalm patient
  • Patient with bleb after glaucoma surgery
  • Terminal glaucoma
  • Herpes
  • One year control impossible

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Measurement of ocular tensional fluctuation by Triggerfish lens before and after cataract surgery in patients with exfoliative glaucoma.
Time Frame: During 24H00 before and after cataract surgery
Variation of ocular volume
During 24H00 before and after cataract surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Brest

Collaborators

Sensimed AG

Investigators

  • Principal Investigator: Catherine COCHARD, Dr, University Hospital of Brest

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 15, 2016

Primary Completion (Actual)

March 9, 2017

Study Completion (Actual)

December 29, 2017

Study Registration Dates

First Submitted

January 14, 2016

First Submitted That Met QC Criteria

January 15, 2016

First Posted (Estimated)

January 18, 2016

Study Record Updates

Last Update Posted (Actual)

June 8, 2026

Last Update Submitted That Met QC Criteria

June 5, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • TRIGGERFISH (RB 15.063)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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