NCT05800353

Nd:YAG Laser Vitreolysis for Symptomatic Vitreous Floaters

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 70 (actual)
• Sponsor: Dongyang People's Hospital · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The goal of this clinical trial is to compare in the efficacy and safety of Nd:YAG laser vitreolysis for symptomatic vitreous floaters. The main question it aims to answer are: • examine the efficacy and safety in treating early onset of vitreous floaters （Weiss ring） using Nd:YAG laser vitreolysis. Participants with symptomatic floaters for one month will be randomly divided into two groups：early treatment group and delayed treatment group. Participants in the early treatment group will receive a YAG laser vitreolysis immediately and a sham laser treatment three months later, while participants in the delayed treatment group will receive a sham laser treatment immediately and a YAG laser vitreolysis three months late. Researchers will compare the two groups to see the efficacy and safety of early YAG laser vitreolysis for symptomatic vitreous floaters.

Conditions

• Weiss Ring

Interventions

Type	Name	Description
PROCEDURE	YAG vitreolysis	A Karickoff lens with goniosol will be used to perform the YAG vitreolysis. The number of shots will be determined at the discretion of the treating physician. A focus offset may be used at investigator discretion. Single shot mode will be used. The maximum energy per pulse will be 7 mJ. The endpoint of treatment is the vaporization of the Weiss ring into gas, as well as the disruption of it into smaller fragments as well as any other vitreous opacities deemed visually significant by the treating physician. Sham laser treatment will be applied under the same procedure used for laser treatment but by turning the laser power down to 0.3 mJ and using a separate lens covered by a filter that absorbs the power, so no laser enters the eye.

Timeline

• Start date: 2022-11-22
• Primary completion: 2024-12-31
• Completion: 2024-12-31
• First posted: 2023-04-05
• Last updated: 2025-10-02

Locations

1 site across 1 country: China