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OpenTrials
Completed

NCT Number: NCT04035239

Retinal Effects of Balance Goggles System in Glaucoma Balance Goggles System (BGS) in Patients With Glaucoma

This is an open-label trial of 20 study participants with glaucoma or ocular hypertension. Participants with qualifying study eye(s) after screening and baseline evaluations will receive the Balance Goggles System. After a baseline evaluation (prior to negative pressure application through the BGS), study eyes will be treated for one hour in the clinic and be evaluated again. They will then use the BGS for the next 3-6 weeks and be evaluated again. The goal is to determine whether the intraocular pressure (IOP)-lowering effects of BGS is accompanied by changes in retinal thickness measured by optical coherence tomography (OCT), retinal vascular density measured by OCT-angiography, or retinal fluorescence measured by a fundus camera.

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Key information

Conditions

Glaucoma Eye Diseases Ocular Hypertension

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Byers Eye Institute at Stanford University

Palo Alto, California, 94303, United States

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Participant must be medically able to undergo the testing required in the schedule of events (SOE).
  • Participant's clinical diagnosis must be consistent with glaucoma characterized by clinical evidence of progressive retinal ganglion cell dysfunction and degeneration using at least one visual field and at least one structural modality, OR with ocular hypertension with intraocular pressure above 21 mm Hg.
  • If a participant has two eyes meeting study criteria, both may be enrolled.
  • Subjects with orbital anatomy that permits a proper seal in both eyes when goggles are placed over eyes and can tolerate measurements with goggles in place
  • Participant must understand and sign the informed consent. If the participant's vision is impaired to the point where he/she cannot read the informed consent document, the document will be read to the participant in its entirety.

Exclusion criteria

  • Subjects with a history of allergy to primary study device material (i.e., silicone)
  • Subjects with a history of any ocular disorder or condition (e.g., corneal transplant) in either eye that would likely interfere with the interpretation of the study results or compromise subject safety
  • Subjects with a prior retinal detachment, active retinal detachment, an untreated retinal detachment, unresolved cystoid macular edema, or any other fundus findings that may prevent visualization of the retina in either eye; subjects with macular degeneration are not excluded from participation in the study
  • Subjects with a history of prior penetrating glaucoma surgery (e.g. trabeculectomy, tube shunt, etc.) in either eye
  • Subjects with narrow anterior chamber angle anatomy in either eye as visualized by gonioscopy with a Shaffer angle grade of ≤ 2 in any of the four quadrants
  • Subjects with eyelid edema, festoons or excessive skin laxity in either eye
  • Subjects with conjunctival chemosis in either eye
  • Subjects with best corrected visual acuity of 20/200 or worse in either eye due to glaucoma
  • Subjects who have had intraocular surgery in the study eye within 12 weeks prior to the screening visit , or who, in the opinion of the investigator, may require any ocular surgery (e.g., cataract extraction or glaucoma procedure) in either eye during the course of the study
  • Subjects who do not wish to or cannot comply with study procedures, including home use of the study device
  • Subjects with any physical or mental condition that would, in the opinion of the investigator, increase the risk of participation in the study or may interfere with the study procedures, evaluations and outcome assessments

Treatment and study plan

BGS goggles

Device

BGS goggles use for 3-6 weeks

Primary outcomes

  1. Retinal thickness

    Time frame: Over a 3-6 week treatment period to study completion

    Change from baseline in retinal nerve fiber layer thickness measured by optical coherence tomography imaging

  2. Retinal vascular density

    Time frame: Over a 3-6 week treatment period to study completion

    Change from baseline in vessel density measured by optical coherence tomographic angiography imaging

  3. Retinal fluorescence

    Time frame: Over a 3-6 week treatment period to study completion

    Change from baseline in flavoprotein fluorescence measured by fundus photography imaging

Sponsors and collaborators

Lead sponsor

Stanford University

Other

Registry information

Official study title

An Open-Label Phase Ib Study to Evaluate Retinal Imaging After Short-term Use of the Balance Goggles System (BGS) in Patients With Glaucoma

Important dates

Study start
2019
Primary completion
2020
Study completion
2022
First posted
Jul 29, 2019
Registry last updated
Nov 23, 2022

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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