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Completed

NCT Number: NCT04557527

Suprachoroidal Visco-buckling for the Treatment of Rhegmatogenous Retinal Detachment

The study compares standard surgery for retinal detachment (RD) (vitrectomy, cryotherapy and gas) with a surgical variation that replaces the intraocular gas tamponade with suprachoroidal injection of viscoelastic underneath the break that caused the retinal detachment.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Guy's & St. Thomas' Hospital NHS Foundatrion Trust, London, United Kingdom

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About this study

After being informed about the study and the potential risks, the eligible patients who have given written consent to the treatment will be randomized into treatment (vitrectomy, cryo and gas) or control (viscobuckle vitrectomy) group.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Patients requiring pars plana vitrectomy for the treatment of primary rhegmatogenous retinal detachment (RD) caused by a single break, or multiple breaks within one clock hour. The final determination of qualifying breaks is made at the time of surgery following 360-degree, internal, indented search using a wide-angle viewing system.

Exclusion criteria

  • Hypersensitivity to hyaluronate or. HEALON5® PRO OVD
  • Participation in another interventional study within 8 weeks of enrolment or planned to occur during this study.
  • Bleeding disorders or the use of anticoagulants (such as warfarin, rivaroxaban) or dual anti-platelet drugs such as aspirin with clopidogrel. Monotherapy with low dose (≤100 mg) aspirin is permitted, and if clinically appropriate this should be stopped prior to surgery and recommenced only after satisfactory day 1 post-operative review.
  • Unwilling, unable, or unlikely to return for scheduled follow-up for the duration of the trial.
  • Any other condition that, in the opinion of the investigator, would prevent the participant from granting informed consent or complying with the protocol, such as dementia, mental illness, or serious systemic medical disease.

Study eye:

  • Presence of proliferative vitreoretinopathy (PVR) or any tractional RD
  • Previous vitreoretinal surgery, open-globe injury or endophthalmitis
  • Aphakia
  • Previous or current congenital cataract
  • Previous or current suprachoroidal haemorrhage
  • Congenital or acquired ocular, orbital or periocular abnormality that, in the opinion of the attending vitreoretinal surgeon, would preclude the safe delivery of Healon 5 into the suprachoroidal space (detail the specific reason for exclusion in the source documents)
  • Presence of other ocular co-morbidity that, in the opinion of the investigator, is likely to prevent an accurate assessment of retinal attachment
  • Current intraocular inflammation other than mild cellular activity thought to be secondary to RD
  • Current ocular or periocular infection other than blepharitis

Treatment and study plan

Pars plana vitrectomy, laser or cryo retinopexy and intraocular gas tamponade

Procedure

Conventional pars plana vitrectomy procedure is used to treat rhegmatogenous retinal detachment- laser or cryo retinopexy intraocular gas tamponade (SF6, C2F6 or C3F8) are chosen according to the number and size of the causative retinal break(s) and surgeons clinical judgement

Suprachoroidal viscobuckle with 2.3% Sodium hyaluronate (Healon 5 Ophthalmic viscoelastic device)

Device

After drainage of subretinal fluid, approximately 0.5 ml of Healon 5 is injected in to the suprachoroidal space underlying the retinal break. Laser retinopexy is applied around the break .

Primary outcomes

  1. To establish if it is feasible to recruit, retain, and evaluate patients with RD into a larger randomised controlled trial of vitrectomy and suprachoroidal viscobuckle.

    Time frame: 2 years

    feasibility trial

  2. To make a preliminary assessment of safety and efficacy of suprachoroidal viscobuckle.

    Time frame: 2 years

    feasibility trial

Sponsors and collaborators

Lead sponsor

King's College Hospital NHS Trust

Other

Collaborators

  • Mid and South Essex NHS Foundation Trust
  • Moorfields Eye Hospital NHS Foundation Trust
  • Norfolk and Norwich University Hospitals NHS Foundation Trust
  • Sheffield Teaching Hospitals NHS Foundation Trust
  • St Thomas' Hospital, London
  • University of Sunderland

Registry information

Official study title

Suprachoroidal Visco-buckling for the Treatment of Rhegmatogenous Retinal Detachment: A Randomized, Controlled, Feasibility Trial

Acronym: VIKING

Important dates

Study start
2022
Primary completion
2024
Study completion
2025
First posted
Sep 21, 2020
Registry last updated
Aug 6, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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