MyopiaNCT06282848
Pharmacological and Non-pharmacological Treatment Effects on Children With Different Predicted Myopia Progression Rate
A study testing Atropine 0.05% and DIMS lens in people with Myopia, run by The Hong Kong Polytechnic University at 1 site in Hong Kong.
Trial summary
The goal of this clinical trial is to compare pharmacological and non-pharmacological treatment effects on the children with different predicted myopia progression rate measured by modified multifocal electroretinogram. Read more about this study
- Who is it for?
- Ages 7 to 9 yearsHealthy volunteers can take part
- Conditions the study is for
- Myopia
- What is being tested?
- Atropine 0.05% and DIMS lens
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 80 participants
- Where
- 1 siteHong Kong
- Study dates
- 1 Jan 2024to Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 7 to 9 years
- All sexes
- Healthy volunteers accepted
- Child
Who may be able to join
- be aged between 7 and 9 years
- have no reported eye disorder and no family history of eye disease
- be able to participate in this study for 24 months
- not have any current or history of epilepsy
- not have any current or history of asthma
- have refractive error between 0.50 D and 4.00 D and less than 1.50D of astigmatism with best corrected visual acuity of LogMAR 0.0 or better
- have no detected eye diseases or disorders after eye examination, except myopia
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Hong Kong1 site, 1 recruiting
- Recruiting
School of Optometry, Hong Kong Polytechnic University
Hong Kong, 00000
Henry HL Chan, PhD, 85227667937, henryhl.chan@polyu.edu.hk
Kaiyip Choi, PhD, 85234002934, kaiyip.choi@polyu.edu.hk
About this study
Official title: Pharmacological (0.05% Atropine) and Non-pharmacological (Defocused Incorporated Multiple Segments Lens) Treatment Effects on the Children With Different Predicted Myopia Progression Rate Measured by Modified Multifocal Electroretinogram
The goal of this clinical trial is to compare pharmacological and non-pharmacological treatment effects on the children with different predicted myopia progression rate measured by modified multifocal electroretinogram. The main questions it aims to answer are:
- the effectiveness of using 0.05% atropine and prescribing DIMS lens for myopia control in children with different myopia progression rates
- the contribution of L/M cones in juvenile myopia progression and changes of retinal activities under atropine and DIMS treatment.
Read more
Participants will have baseline and follow-up eye examinations and given either pharmacological treatment with 0.05% atropine or non-pharmacological treatment with DIMS lens for myopia control.
Researchers will compare the changes of refractive errors and axial length after different types of interventions and investigate the relations between the parameters of mfERG responses and the thicknesses of retinal layers and choroid.
Read the detailed description
This proposed study is a 24-month longitudinal randomized trial that aims to investigate myopia development after either topical application of 0.05% atropine or prescription of DIMS lens in children with various predicted myopia progression rates by their initial retinal responses obtained by multifocal ERG. This will help elucidate the effectiveness of using 0.05% atropine and prescribing DIMS lens for myopia control in children with different myopia progression rates. The retinal electrophysiological investigation will help determine the contribution of L/M cones in juvenile myopia progression and changes of retinal activities under atropine and DIMS treatment.
80 subjects in either gender aged 7 to 9 years will be recruited in this study. They should have spherical equivalent refractive error between -0.5D and -4D in both eyes with best-corrected visual acuity of logMAR 0.00 or better. All should have normal eye health and without systemic diseases or epilepsy. They have not received any myopia control previously. Eligible subjects will have a baseline eye examination and have the first 6-month period monitoring the refractive and ocular changes compared with the baseline control data. After these 6 months, subjects will be classified into either fast or slow myopia progression group in accordance with the results of electrophysiology results and then will further be randomly allocated either intervention group: pharmacological treatment group (daily topical 0.05% atropine) or control group: non-pharmacological treatment group (daily wear of Defocused Incorporated Multiple Segments - DIMS lenses), for 18 months study period with 6-month interval regular follow up.
The primary outcomes are the changes of refractive errors and axial length after different types of interventions and the secondary outcomes are the relations between the parameters of mfERG responses and the thicknesses of retinal layers and choroid.
- Conditions
- Myopia
- Being tested
- Atropine 0.05%, DIMS lens
- Keywords
- Myopia, Atropine, Optical defocus, Electroretinogram, Retina
- Medical subject headings
- Myopia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Atropine 0.05%Drug
Topical application
DIMS lensDevice
Spectacle wear
| Study group | Role | What they receive |
|---|---|---|
| Atropine 0.05% | Active comparator | Group receiving atropine treatment for 18 months after 6 months of monitoring without intervention Receives: Drug: Atropine 0.05% |
| DIMS lens | Experimental | Group receiving DIMS lens treatment for 18 months after 6 months of monitoring without intervention Receives: Device: DIMS lens |
What is being measured
The primary outcome is the main question the study is designed to answer.
Subjective refraction
Refractive error (in Diopter)
Measured: up to 24 months
Axial length
Length of eyeball
Measured: up to 24 months
Secondary outcomes (2)
mfERG responses
Parameters of mfERG responses
Measured: up to 24 months
Retinal and choroidal thickness
Thicknesses of retinal layers and choroid
Measured: up to 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Feb 2024
- Study start1 Jan 2024
- Primary completionDec 2026 (estimated)
- Study completionDec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for MyopiaStudies of the same condition, open and under way.
- More trials run by The Hong Kong Polytechnic UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Randomized clinical trial
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 80 participants (estimated)
Sponsor and investigators
- Lead sponsor
- The Hong Kong Polytechnic University
- Sponsor type
- University, hospital or other
- Collaborators
- The University of Hong Kong
- Responsible party
- Principal investigator, Henry HL Chan, PhD, The Hong Kong Polytechnic University
- Investigators
- Henry HL CHAN, PhD, Principal investigator, The Hong Kong Polytechnic University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06282848
- Sponsor's protocol ID
- HongKongPU_Optometry4
- Status last verified
- Sep 2025
- First submitted
- 21 Feb 2024
- Last updated
- 17 Sep 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Sep 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pharmacological (0.05% Atropine) and Non-pharmacological (Defocused Incorporated Multiple Segments Lens) Treatment Effects on the Children With Different Predicted Myopia Progression Rate Measured by Modified Multifocal Electroretinogram
- ClinicalTrials.gov ID
- NCT06282848
- Acronym / sponsor ID
- HongKongPU_Optometry4
- Conditions
- Myopia
- Keywords
- Myopia, Atropine, Optical defocus, Electroretinogram, Retina
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 80 participants (estimated)
- Lead sponsor
- The Hong Kong Polytechnic UniversityUniversity, hospital or other
- Collaborators
- The University of Hong Kong
- Study start
- 1 Jan 2024 (actual)
- Primary completion
- Dec 2026 (estimated)
- Study completion
- Dec 2026 (estimated)
- First posted
- 28 Feb 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this clinical trial is to compare pharmacological and non-pharmacological treatment effects on the children with different predicted myopia progression rate measured by modified multifocal electroretinogram. The main questions it aims to answer are:
- the effectiveness of using 0.05% atropine and prescribing DIMS lens for myopia control in children with different myopia progression rates
- the contribution of L/M cones in juvenile myopia progression and changes of retinal activities under atropine and DIMS treatment.
Participants will have baseline and follow-up eye examinations and given either pharmacological treatment with 0.05% atropine or non-pharmacological treatment with DIMS lens for myopia control.
Researchers will compare the changes of refractive errors and axial length after different types of interventions and investigate the relations between the parameters of mfERG responses and the thicknesses of retinal layers and choroid.
Detailed description
This proposed study is a 24-month longitudinal randomized trial that aims to investigate myopia development after either topical application of 0.05% atropine or prescription of DIMS lens in children with various predicted myopia progression rates by their initial retinal responses obtained by multifocal ERG. This will help elucidate the effectiveness of using 0.05% atropine and prescribing DIMS lens for myopia control in children with different myopia progression rates. The retinal electrophysiological investigation will help determine the contribution of L/M cones in juvenile myopia progression and changes of retinal activities under atropine and DIMS treatment.
80 subjects in either gender aged 7 to 9 years will be recruited in this study. They should have spherical equivalent refractive error between -0.5D and -4D in both eyes with best-corrected visual acuity of logMAR 0.00 or better. All should have normal eye health and without systemic diseases or epilepsy. They have not received any myopia control previously. Eligible subjects will have a baseline eye examination and have the first 6-month period monitoring the refractive and ocular changes compared with the baseline control data. After these 6 months, subjects will be classified into either fast or slow myopia progression group in accordance with the results of electrophysiology results and then will further be randomly allocated either intervention group: pharmacological treatment group (daily topical 0.05% atropine) or control group: non-pharmacological treatment group (daily wear of Defocused Incorporated Multiple Segments - DIMS lenses), for 18 months study period with 6-month interval regular follow up.
The primary outcomes are the changes of refractive errors and axial length after different types of interventions and the secondary outcomes are the relations between the parameters of mfERG responses and the thicknesses of retinal layers and choroid.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
- Model description
- Randomized clinical trial
| Arm | Type | Receives |
|---|---|---|
| Atropine 0.05% | Active comparator | Drug: Atropine 0.05%Group receiving atropine treatment for 18 months after 6 months of monitoring without intervention |
| DIMS lens | Experimental | Device: DIMS lensGroup receiving DIMS lens treatment for 18 months after 6 months of monitoring without intervention |
Who may qualify
- Ages
- 7 to 9 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (7 listed)
- be aged between 7 and 9 years
- have no reported eye disorder and no family history of eye disease
- be able to participate in this study for 24 months
- not have any current or history of epilepsy
- not have any current or history of asthma
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Atropine 0.05%Topical application | Drug | Atropine 0.05% |
| DIMS lensSpectacle wear | Device | DIMS lens |
Primary outcome
Subjective refraction
Time frame: up to 24 months
Refractive error (in Diopter)
Axial length
Time frame: up to 24 months
Length of eyeball
2 secondary outcomes
mfERG responses
Time frame: up to 24 months
Retinal and choroidal thickness
Time frame: up to 24 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Sep 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Henry HL CHAN, PhD principal investigator
The Hong Kong Polytechnic University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Atropine 0.05% and DIMS lens in people with Myopia, run by The Hong Kong Polytechnic University at 1 site in Hong Kong.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 17 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Hong Kong. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Henry HL CHAN, PhD (85227667937, henryhl.chan@polyu.edu.hk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Subjective refraction (time frame: up to 24 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Sep 2025; AzTrials last refreshed its copy on 7 Nov 2026.