CYPRESS Efficacy and Safety Study Extension

Running, not enrolling · Not applicable

Conditions studied: Juvenile Myopia, Myopia

In brief

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.

Key facts

Study ID

NCT04947735

Run by

SightGlass Vision, Inc.

People needed

200

Starts

2021-07-19

Expected to finish

2026-12-31

Last updated by the study team

2026-05-05

Who can join

Age: 6 and older, up to 17. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Previously a successfully completed participant in the CYPRESS study (NCT03623074) and having not exited this study for more than 30 days;
• Agree to wear the assigned spectacles constantly except for sleeping, swimming, or other activities in which spectacle wear would be dangerous or otherwise not possible (minimum of 10 hours per day);
• Willingness to participate in the trial for up to 3 years without contact lens wear;
• The subject's parent(s) or legal guardian(s) must read, understand and sign the Statement of Informed Consent and receive a fully executed copy of the form.

You may not qualify if…

• Known allergy to proparacaine, tetracaine, or tropicamide.

Where it is running

• Golden Optometric Group — Whittier, California, United States
• Omega Vision Center, PA — Longwood, Florida, United States
• Kannarr Eye Care — Pittsburg, Kansas, United States
• Haik Humble — West Monroe, Louisiana, United States
• Advanced Eyecare PC — Raytown, Missouri, United States
• SUNY School of Optometry — New York, New York, United States
• Sacco Eye Group — Vestal, New York, United States
• Dunes Eye Consultants — Dakota Dunes, South Dakota, United States
• Total Eye Care — Memphis, Tennessee, United States
• Dr. Bridgitte Shen Lee (PI) — Houston, Texas, United States
• William J Bogus, OD, FAAO — Salt Lake City, Utah, United States
• Centre for Ocular Research and Education — Waterloo, Ontario, Canada

Full record on ClinicalTrials.gov

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