🏛️ Verified NIH Record • Updated 2026-04-29
CYPRESS Efficacy and Safety Study Extension (NCT04947735)
Control of Myopia Using Peripheral Diffusion Lenses: Efficacy and Safety Study Extension
🔵 Active, Not Recruiting Observational / Diagnostic ⚙️ Medical Device Protocol Sponsor: SightGlass Vision, Inc.
🩺 Plain-English Summary (8th-Grade Level)
This is an open-label, controlled, multisite, two-arm parallel group clinical trial of 36-month duration to evaluate the continued safety and efficacy of SightGlass Vision Diffusion Optics Technology (DOT) Spectacles in reducing the progression of juvenile myopia.
Who can join: Review the eligibility criteria below.
Location: Golden Optometric Group — Whittier, California
Age range: 6 Years to 17 Years
🧪 Interventions in This Study
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistFull eligibility criteria are available on the official NIH protocol. View the criteria ↗
📍 All Participating Trial Locations (12 Sites)
- Golden Optometric Group — Whittier, California
- Omega Vision Center, PA — Longwood, Florida
- Kannarr Eye Care — Pittsburg, Kansas
- Haik Humble — West Monroe, Louisiana
- Advanced Eyecare PC — Raytown, Missouri
- SUNY School of Optometry — New York, New York
- Sacco Eye Group — Vestal, New York
- Dunes Eye Consultants — Dakota Dunes, South Dakota
- Total Eye Care — Memphis, Tennessee
- Dr. Bridgitte Shen Lee (PI) — Houston, Texas
- William J Bogus, OD, FAAO — Salt Lake City, Utah
- Centre for Ocular Research and Education — Waterloo, Ontario
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.
More studies in Juvenile Myopia
- Control of Myopia Using Novel Spectacle Lens Designs — Whittier, California
Explore by condition: All Juvenile Myopia clinical trials
💡 How to Participate
- Check the checklist above to see if you may qualify.
- Review the official NIH record below to find the coordinating site.
- Ask about the visit schedule, what is covered at no cost, and any travel support.
- Confirm with your own doctor before making a decision.