Pan African Clinical Trials Registry

South African Medical Research Council, South African Cochrane Centre
PO Box 19070, Tygerberg, 7505, South Africa
Telephone: +27 21 938 0835 or +27 21 938 0967
Email: pactradmin@mrc.ac.za Website: pactr.samrc.ac.za
Trial no.: PACTR202607621525726 Date of Registration: 31/07/2026
Trial Status: Registered in accordance with WHO and ICMJE standards
TRIAL DESCRIPTION
Public title A Prospective, Multicenter, Single-Arm, Open-Label Clinical Trial of the Safety and Effectiveness of the VisiPlate Aqueous Shunt in Patients with Refractory Open-Angle Glaucoma
Official scientific title A Prospective, Multicenter, Single-Arm, Open-Label Clinical Trial of the Safety and Effectiveness of the VisiPlate Aqueous Shunt in Patients with Refractory Open-Angle Glaucoma.
Brief summary describing the background and objectives of the trial Glaucoma is a group of disorders whose common feature is progressive degeneration of the optic nerve, with loss of retinal ganglion cells, thinning of the retinal nerve fiber layer & increasing excavation of the optic disc. The most common form of glaucoma is open-angle glaucoma which includes primary open-angle glaucoma, pseudoexfoliation glaucoma & pigmentary glaucoma. Management of glaucoma requires chronic, life-long treatment with a spectrum of therapeutic options including medications, laser treatment & surgical implants. The common goal among the various therapies is to lower intraocular pressure to target levels to prevent loss of visual fields from excessive pressure on the optic nerve. While medical & less invasive surgical options allow eyes with mild-to-moderate disease to maintain target IOP, eyes with severe or progressive disease require additional interventions. Such cases are often referred to as refractory glaucoma & very often require multiple more invasive surgical interventions such as trabeculectomy or implantation of a glaucoma drainage device to attain target IOP. This pivotal FDA trial aims to evaluate the VisiPlate Aqueous Shunt. VisiPlate is intended to reduce intraocular pressure in eyes with open-angle glaucoma for whom previous medical & surgical treatment has failed. An OUS study comprised of 15 eyes with OAG implanted with VisiPlate shunt with a one-year follow has shown promising effectiveness and a favorable safety profile. OBJECTIVES PRIMARY 1. The 1st co-primary outcome is the proportion of eyes achieving a ≥ 20% reduction in MDIOP at Month 12 while maintaining the same/fewer number of ocular hypotensive medication classes compared to Baseline (BL) Visit 2. The 2nd co-primary outcome is the reduction in MDIOP (mmHg) at Month 12 compared to BL Visit SECONDARY 1. The percent change in MDIOP at Month 12 compared to BL Visit 2. The mean reduction in the number of ocular hypotensive medication classes at Month 12 compared to BL Visit
Type of trial Updates Need Review
Acronym (If the trial has an acronym then please provide) SAPPHIRE
Disease(s) or condition(s) being studied Eye Diseases
Sub-Disease(s) or condition(s) being studied
Purpose of the trial Treatment: Devices
Anticipated trial start date 01/01/2026
Actual trial start date
Anticipated date of last follow up 31/01/2027
Actual Last follow-up date
Anticipated target sample size (number of participants) 16
Actual target sample size (number of participants)
Recruitment status Not yet recruiting
Publication URL
Secondary Ids Issuing authority/Trial register
DOH-27-072026-5455 SANCTR
CP0005 Sponsor
STUDY DESIGN
Intervention assignment Allocation to intervention If randomised, describe how the allocation sequence was generated Describe how the allocation sequence/code was concealed from the person allocating the participants to the intervention arms Masking If masking / blinding was used
Single Group Non-randomised Allocation was determined by the holder of the sequence who is situated off site Open-label(Masking Not Used)
INTERVENTIONS
Intervention type Intervention name Dose Duration Intervention description Group size Nature of control
Experimental Group VisiPlate Aqueous Shunt One, once One implant VisiPlate Aqueous Shunt is an investigational, sterile, single-use, multi-channel implant designed to lower IOP in subjects with open-angle glaucoma for whom medical and conventional surgical treatments have failed. 16
ELIGIBILITY CRITERIA
List inclusion criteria List exclusion criteria Age Category Minimum age Maximum age Gender
1. Subjects aged 45 years or older at the Screening Visit 2. Open-angle glaucoma that is uncontrolled by at least 4 classes of ocular hypotensive medications, or fewer in cases where certain medication classes cannot be tolerated and/or are contraindicated and meets at least one of the following criteria: a. Failed one or more incisional intraocular glaucoma surgeries (e.g., glaucoma filtering surgery or tube shunt), or b. Failed one or more cilioablative procedures (with the exception of endocyclophotocoagulation (ECP) or micropulse cyclophotocoagulation (µCPC)). 3. A medicated IOP at the Screening Visit and a mean medicated diurnal IOP at the Baseline Visit of ≥ 20 mmHg and ≤ 40 mmHg 4. Corrected Distance Visual Acuity (CDVA) of light perception or better 5. Glaucomatous optic nerve damage as evidenced by one or more optic disc or retinal nerve fiber layer structural abnormalities, refer to protocol for additional details 6. Glaucomatous visual field defects consistent with optic nerve anomalies, refer to protocol for additional definitions 7. Visible trabecular meshwork with Shaffer Angle Grade ≥ 2. 8. Median central corneal thickness ≥ 460 μm and ≤ 620 μm. 9. Area of free, healthy, and mobile conjunctiva in the target region (superior temporal preferred, but superior nasal permitted) without evidence of subconjunctival fibrosis or anatomical anomaly. 10. Phakic or pseudophakic, refer to protocol for additional details 11. Able to understand the study requirements and provide written informed consent 12. Willing to follow study instructions, agree to comply with all study procedures, and able to return for all scheduled follow-up examinations for at least 12 months postoperatively 1. Prior intraocular surgery, exceptions per protocol 2. Non-study eye with Corrected Distance Visual Acuity worse than 20/200 3. Prior Argon Laser Trabeculoplasty, Selective Laser Trabeculoplasty, YAG capsulotomy and YAG vitreolysis within 90 days of Screening 4. Concurrent cataract surgery or anticipated need for cataract surgery, retinal laser procedure or other ocular surgery in the study eye during the 12 months following implantation 5. History of congenital, traumatic, uveitic, neovascular or angle-closure glaucoma or glaucoma associated with vascular disorders 6. Corneal status as follows: a. Active inflammation, b. Clinically significant dystrophy, c. History of corneal surgery with exceptions, d. Corneal opacities that would inhibit visualization in the target region 7. Presence of aphakia, anterior chamber IOL or implantable contact lens 8. Choroidal detachment, effusion, choroiditis, neovascularization or any active choroidopathy 9. Retinal or optic nerve disorders, either degenerative or evolutive, that are not associated with the existing glaucoma condition 10. Elevated episcleral venous pressure or impaired episcleral venous drainage 11. History of hypersensitivity or allergy to any of the device materials/medications used in study 12. Other ocular status per protocol 13. Subject status as follows: a. Uncontrolled systemic disease or completion of chemotherapy, immunotherapy or radiotherapy to the face within 6 months of Screening, b. Inability to potentially discontinue anticoagulation or antiplatelet therapy at the time of surgery 14. Pregnant or nursing women or women of childbearing potential not willing to use contraception throughout the study 15. Patients who have within the previous month, currently or intend to participate in a study with any investigational product 16. Unwilling to discontinue contact lens wear after surgery for the duration of the study 17. Any reason that would increase risks or confound study data per the investigator 80 and over: 80+ Year,Aged: 65 Year(s)-79 Year(s),Middle Aged: 45 Year(s)-64 Year(s) 45 Year(s) 100 Year(s) Both
ETHICS APPROVAL
Has the study received appropriate ethics committee approval Date the study will be submitted for approval Date of approval Name of the ethics committee
Yes 09/07/2026 SAHPRA
Ethics Committee Address
Street address City Postal code Country
SAHPRA Head Office, Building A, Loftus Park, 2nd Floor, Kirkness Street, Arcadia Pretoria 0083 South Africa
Has the study received appropriate ethics committee approval Date the study will be submitted for approval Date of approval Name of the ethics committee
Yes 16/02/2026 Pharma Ethics Independent Research Ethics Committee
Ethics Committee Address
Street address City Postal code Country
123 Amkor Road, Lyttelton Manor Ext 3, Centurion Pretoria 0157 South Africa
OUTCOMES
Type of outcome Outcome Timepoint(s) at which outcome measured
Primary Outcome 1. The first co-primary effectiveness outcome is the proportion of subjects (eyes) achieving a = 20% reduction in MDIOP at Month 12 while maintaining the same or fewer number of ocular hypotensive medication classes compared to the Baseline Visit. a. The proportion of eyes achieving the primary effectiveness outcome will be calculated with the corresponding 95% confidence interval. 2. The second co-primary effectiveness outcome is the reduction in MDIOP (mmHg) at Month 12 compared to the Baseline Visit. a. The MDIOP change at Month 12 from the baseline will be calculated with the corresponding 95% confidence interval. Month 12
Secondary Outcome 1. The percent change in MDIOP at Month 12 compared to the Baseline Visit. a. The MDIOP percent change at Month 12 from the baseline will be calculated with the corresponding 95% confidence interval. 2. The mean reduction in the number of ocular hypotensive medication classes at Month 12 compared to the Baseline Visit. a. The mean reduction in the number of ocular hypotensive medication classes at Month 12 from the baseline will be calculated with the corresponding 95% confidence interval. Month 12
Secondary Outcome KEY SAFETY OUTCOMES Key safety will be summarized by study visit for the study eye and will include: • Incidence and severity of ocular adverse events (intraoperative, postoperative) • BCDVA • Incidence of lens opacities or worsening of pre-existing lens opacities (phakic eyes only) • Slit lamp biomicroscopy findings • Fundus examination findings • Visual field measurements • Gonioscopic examination findings • Pachymetry End of trial
RECRUITMENT CENTRES
Name of recruitment centre Street address City Postal code Country
LYNEYE 63 President Steyn Avenue, Westdene Bloemfontein 9301 South Africa
Pretoria Eye Institute 630 Francis Baard Street, Arcadia Pretoria 0083 South Africa
FUNDING SOURCES
Name of source Street address City Postal code Country
Avisi Technologies Inc 1733 Woodside Rd, STE 310 Redwood City CA 94061 United States of America
SPONSORS
Sponsor level Name Street address City Postal code Country Nature of sponsor
Primary Sponsor Avisi Technologies Inc 1733 Woodside Rd, STE 310 Redwood City CA 94061 United States of America Commercial Sector/Industry
COLLABORATORS
Name Street address City Postal code Country
CONTACT PEOPLE
Role Name Email Phone Street address
Principal Investigator Lynette Venter dr@lyneye.co.za +27515223394 63 President Steyn Avenue, Westdene
City Postal code Country Position/Affiliation
Bloemfontein 9301 South Africa Ophthalmologist and National Principal Investigator
Role Name Email Phone Street address
Public Enquiries Morne De Bruin morne@avisitech.com +27834486144 21 Green Acres, Highveld
City Postal code Country Position/Affiliation
Pretoria 0169 South Africa Consultant and Regional Monitor
Role Name Email Phone Street address
Scientific Enquiries Kait Lee kati@avisitech.com +12816100251 1733 Woodside Road, Suite 310
City Postal code Country Position/Affiliation
Redwood City CA 94061 United States of America Director of Clinical Operations Avisi Technologies
REPORTING
Share IPD Description Additional Document Types Sharing Time Frame Key Access Criteria
Yes De-identified participant data will be managed collaboratively by StatServ Consulting, Inc. and Avisi Technologies, Inc. as part of their respective Electronic Data Capture (EDC) and data management responsibilities. StatServ Consulting, Inc. will serve as the designated Data Manager and will perform all data management activities in accordance with its established standard operating procedures. Following data cleaning and quality review, de-identified participant data may be shared with the applicable local and international regulatory authorities, including the U.S. Food and Drug Administration (FDA), as required for regulatory submissions. In addition, aggregated and de-identified data may be used for scientific and academic presentations. No personally identifiable participant information will be disclosed. Clinical Study Report,Informed Consent Form,Statistical Analysis Plan,Study Protocol 12 months after end of study Request for access to study data to be sent to Sponsor
URL Results Available Results Summary Result Posting Date First Journal Publication Date
No
Result Upload 1: Result Upload 2: Result Upload 3: Result Upload 4: Result Upload 5:
Result URL Hyperlinks Link To Protocol
Result URL Hyperlinks
Changes to trial information