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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05300321
Other study ID # KY201902
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date June 1, 2019
Est. completion date April 1, 2021

Study information

Verified date March 2022
Source Tianjin Eye Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

To confirm the efficacy of DIMS lenses in controlling myopia progression, we planned a prospective randomized controlled clinical study.


Description:

The subjects were randomly assigned into two groups: the control group (SV) and the experimental group (DIMS). The clinical trial assistant took the glasses before examination and returned them after examiners had performed all tests. Examiners were unaware of the spectacle type until the end of the follow-up period. However, the lens type was known by children and parents since the unique appearance of the DIMS lens. The subjects were provided details about the study design and methodology and their rights as subjects at first visit. We conducted visual acuity tests, subjective and objective refraction measurements, AL measurements, heterophoria at distance and near, and accommodation after obtaining written informed consent from them and their parent. We conducted follow-up examinations 6 and 12 months after the first visit. In the follow-up examinations, we measured all the examination as do ate the firt visit. Either the VA with the current spectacles dropped to < 0.8(20/20) or SE of cycloplegic subjective refraction increased ≤-0.50D, the lens power of the spectacles was replaced on the basis of the cycloplegic subjective refraction.


Recruitment information / eligibility

Status Completed
Enrollment 82
Est. completion date April 1, 2021
Est. primary completion date November 30, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 6 Years to 13 Years
Eligibility Inclusion Criteria: - The subjects had spherical RE of -1.00 to -6.50 D, astigmatism = 4.00 D, anisometropia = 1.50 D - Best corrected visual acuity (BCVA) equal to or better than logMAR 0.0 (20/20) in both eyes. Exclusion Criteria: - Candidate subjects were excluded from the study if they had strabismus, ocular limitations, or systemic abnormalities affecting vision and ocular motility.

Study Design


Related Conditions & MeSH terms


Intervention

Device:
frame lens
The subjects were randomized to allocate in Single Vision (SV) lens or Defocus Incorporated Multiple Segments (DIMS) Lens group.

Locations

Country Name City State
China Tianjin Eye Hospital Tianjin

Sponsors (1)

Lead Sponsor Collaborator
Tianjin Eye Hospital

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Primary Cycloplegic objective refraction Cycloplegic objective refraction was measured with an autorefractor (Topcon KR8900, Japan). 12months
Secondary Axial Length Axial length (AL) was measured with an AL-Scan optical biometer (Nidek, Japan). 12months
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