Ignite Creation Date:
2025-12-24 @ 12:56 PM
Ignite Modification Date:
2026-01-16 @ 2:58 AM
Study NCT ID:
NCT07264361
Status:
NOT_YET_RECRUITING
Last Update Posted:
2025-12-04
First Post:
2025-11-18
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Evaluation of the Safety and Efficacy of the D.D.C Dual-control Technology Spectacle Lenses in Delaying the Progression of Myopia: a Randomized Controlled Trial
Sponsor:
Zhongshan Ophthalmic Center, Sun Yat-sen University
Organization:
Study Overview
Official Title:
Evaluation of the Safety and Efficacy of the D.D.C Dual-control Technology Spectacle Lenses in Delaying the Progression of Myopia: a Randomized Controlled Trial
Status:
NOT_YET_RECRUITING
Status Verified Date:
2025-08
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The burden of myopia among Chinese children and adolescents is severe and trending toward younger ages, making control of myopia progression a public health priority. Current mainstream strategies include optical interventions, pharmacologic therapy, and environmental measures. Among these strategies, spectacle designs based on optical defocus-such as defocus-incorporated multiple-segment (DIMS) lenses-have demonstrated efficacy; however, the effect of such designs may attenuate over time because of "defocus adaptation." To address this limitation, D.D.C dual-control spectacles employ a densely staggered microlens layout, a gradient-defocus architecture, and an added peripheral "fogging zone" to disrupt the spatial distribution of defocus cues and reduce contrast, thereby delaying adaptation and enhancing myopia-control efficacy.
The present study therefore proposes a 24-month prospective randomized controlled trial in Guangzhou, enrolling eligible myopic adolescents. The trial will first compare 12-month outcomes between D.D.C-A lenses and single-vision lenses, followed by a crossover and alternating-wear phase, to systematically evaluate the safety and efficacy of the D.D.C technology in slowing myopia progression.
The present study therefore proposes a 24-month prospective randomized controlled trial in Guangzhou, enrolling eligible myopic adolescents. The trial will first compare 12-month outcomes between D.D.C-A lenses and single-vision lenses, followed by a crossover and alternating-wear phase, to systematically evaluate the safety and efficacy of the D.D.C technology in slowing myopia progression.
Detailed Description:
None
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: