Clinical Investigation of the eyeWatch Glaucoma Drainage Device

This study aims to test a new medical device, called the eyeWatch, used in filtering surgery for the treatment of glaucoma. This medical device has the following property: it allows better control of intraocular pressure in the initial postoperative phase by adjusting aqueous flow going through the device. The target criteria for the study are defined as: keeping intraocular pressure in target range; reducing the number of anti-glaucoma drugs; evaluating the number and type of postoperative complications. So far, this device has been already tested on 20 patients in Switzerland.

Study Overview

• Status: Completed
• Conditions: Open Angle Glaucoma
• Intervention / Treatment: Device: eyeWatch system

• Study Type: Interventional
• Enrollment (Actual): 27
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United Kingdom
  • London, United Kingdom, SE1 7EH
    • St. Thomas' Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Patient must be 18 years of age or older.
• Patient shall suffer from primary open angle glaucoma, pseudo-exfoliative glaucoma, or refractory POAG or PEXG after previous failed filtering surgery, in the study eye. Diagnosis is based on glaucomatous optic neuropathy, Shaffer angle greater than 2 as seen on gonioscopy, and visual field defect attributed to glaucoma.
• Eye to be treated shall be phakic or pseudophakic with no other active ocular disease or disorder except for incipiens cataract. Prior ophthalmic surgery in the study eye shall have been performed more than 3 months before enrollment in this study.
• Patient condition is indicated for primary and secondary filtration surgery.
• Presence of elevated intraocular pressure defined as an intraocular corrected pressure (IOP) > 20 mmHg in the study eye, under maximally tolerated medications. The IOP level shall be obtained on 2 consecutive measurements (not taken on the same day) prior to surgery.
• Optic neuropathy is exclusively attributed to glaucoma.
• Patient agreed to sign the written inform consent prior to entering into the investigation.
• Patient is able and willing to complete post-operative follow-up requirements.

Exclusion Criteria:

• Diagnosis of neovascular glaucoma, congenital glaucoma.
• History of previous intraocular surgery in the study eye referring to but not limited to extraocular muscles (strabismus), corneal transplant, retinal surgery.
• Proliferative or severe non-proliferative retinopathy in either eye.
• Congenital anomaly of the anterior chamber angle in the study eye.
• Optic neuropathy other than glaucoma in the study eye.
• Patient with retinal vein occlusion in the study eye.
• Patient with retinal artery occlusion in the study eye.
• Patient with corneal opacifications, endotheliopathy, or irregularities that may interfere with the optic nerve evaluation or the IOP measurements in the study eye.
• Patient with a history of severe eye trauma in the study eye.
• Patient with ocular malformations such as microphthalmia in the study eye.
• Patient with concurrent inflammatory/infective eye disorder in the study eye.
• Patient with severe systemic disease or disabling conditions such as chronic renal failure, post organ transplants.
• Patient participating in another clinical trial or having participated in another clinical trial less than 3 months prior to entering into the investigation.
• Patient is pregnant, breast-feeding or unable to make the decision to participate in a clinical investigation (e.g. mentally ill person, mentally handicapped person)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: eyeWatch device	Device: eyeWatch system; The eyeWatch device is composed of an AGDD, a control unit and a draining plate; Other Names: Adjustable glaucoma drainage device (AGDD)

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number and type of serious adverse device events	Demonstration of safety. The number and type of serious adverse device event per patient will be measured. Results of biomicroscopy, gonioscopy, pachymetry visual field and endothelial count will be compared to baseline.	Follow-up: day 1, Week 1, week 2, month 1, month 2, month 3, month 6, month 12 compared to baseline
Effectiveness in reducing the intraocular pressure	Demonstration of the performance. The intraocular pressure (IOP in mmHg) will be measured at different time points to show the effective reduction compared to baseline. IOP reduced by ≥ 20% or IOP < 21 mmHg, and no IOP < 5 mmHg on two consecutive visits after 1 month (included)	Follow-up: day 1, Week 1, week 2, month 1, month 2, month 3, month 6, month 12 compared to baseline

Collaborators and Investigators

• Sponsor: Rheon Medical SA

Publications and helpful links

General Publications

• Villamarin A, Roy S, Bigler S, Stergiopulos N. A new adjustable glaucoma drainage device. Invest Ophthalmol Vis Sci. 2014 Mar 25;55(3):1848-52. doi: 10.1167/iovs.13-12626.

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2018
• Primary Completion (Actual): October 27, 2020
• Study Completion (Actual): October 27, 2020

Study Registration Dates

• First Submitted: July 1, 2017
• First Submitted That Met QC Criteria: July 4, 2017
• First Posted (Actual): July 7, 2017

Study Record Updates

• Last Update Posted (Actual): October 28, 2021
• Last Update Submitted That Met QC Criteria: October 26, 2021
• Last Verified: October 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Eye Diseases; Ocular Hypertension; Glaucoma; Glaucoma, Open-Angle
• Other Study ID Numbers: 3007

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No
• IPD Plan Description: There is no plan

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