CClinicalTrials.gg
Active, not recruitingNCT05667454MADUpdated Sep 14, 2026

MAD Trial: Myopia Atropine Dose

A Phase 3 interventional study of Atropine Ophthalmic 0.05% and Atropine Ophthalmic 0.5% in Progressive Myopia, sponsored by Erasmus Medical Center. Active, not recruiting at 20 sites in Netherlands. Open to participants aged 6 Years to 11 Years. Per ClinicalTrials.gov, last updated 2026-09-14.

Sponsored by Erasmus Medical Center · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
550
Allocation
Randomized
Ages
6 Years to 11 Years
Sex
All
01

Study summary

The goal of this interventional study is to compare the efficacy of Atropine 0.05% to Atropine 0.5% treatment against progression of axial length in European children with progressive myopia, and to evaluate the safety, adherence, and reasons for nonresponse. Subjects will use Atropine eye drops for a period of 3 years, followed by a 2 year observational period.

Read the detailed description

With the current worldwide myopia boom the frequency of high myopia will also increase, and potentially blinding complications such as myopic macular degeneration, retinal detachment, and glaucoma will occur more often. In the Netherlands high myopia will become the most important cause of low vision and blindness by 2050. As treatment options are limited once the eye is fully grown, prevention of a long axial length at childhood is the only way to counteract this prospect. Pharmacological interventions have shown a high efficacy in stopping eye growth, in particular eye drops with high dose Atropine (0.5%, 1%). Nevertheless, the high frequency of side effects (photophobia, reading problems) of these Atropine concentrations has favoured the use of low dose Atropine. Atropine 0.01% is the most commonly used and lowest dosage; it has shown stability of refractive error, but not of axial length. Recent studies have shown that Atropine 0.05% has low risk of side effects, but a higher efficacy than 0.01%. Many ongoing trials are now comparing various low dose Atropine to placebo, but none are comparing the highest low dose to the lowest high dose Atropine.

02

Conditions studied

  • Progressive Myopia

Keywords

  • Myopia
  • Atropine
  • Axial length
  • Child
03

In context

Myopia, Degenerative

70 studies on the registry are indexed under Myopia, Degenerative; 19 are open to participants now.

This study's planned enrollment of 550 is above the median of 121 across 56 interventional studies indexed under Myopia, Degenerative.

Browse Myopia, Degenerative studies →

Lead sponsor

Erasmus Medical Center is the lead sponsor of 466 studies on the registry; 179 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Years to 11 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Children aged 6 to ≤ 11 years with bilateral myopia
  • Onset of myopia ≥ 4 years of age
  • History of progression
  • SER of at least -1.00D and no greater than -6.00D in each eye measured using cycloplegic auto refraction
  • Intraocular pressure \< 21 mm Hg in each eye
  • Distance vision correctable to at least 0.1 Log MAR (logarithm of the minimum angle of resolution) in each eye

Exclusion criteria

Exclusion Criteria:

  • Allergy to atropine or other excipients of the eye drops
  • History of amblyopia or strabismus
  • History of retinal dystrophy or systemic disorder
  • Abnormal ocular biometry aside from axial length
  • History of glaucoma
  • Chronic use of topical or systemic antimuscarinic/anticholinergic medications in the 21 days prior to screening, and/or anticipated need for chronic use over the duration of the study (i.e., more than 7 consecutive days in 1 month or more than a total of 30 days in 1 year).
  • Chronic use (more than 3 days a week) of topical ophthalmological medication (prescribed or over the counter) other than the assigned study medication. The use of artificial tears is allowed but not in the 1 hour before or after the administration of the study medication.
  • The anticipated need to use chronic ophthalmic or systemic oral corticosteroids during the study. (i.e., \< 2 weeks)
  • Prior myopia treatments.
  • Employees of the study center and their family members.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
550 participants (estimated)

Study arms

  • Active comparator
    Low dose atropine

    Atropine 0.05% sulphate ophthalmic solution should be administered, one drop in each eye, once daily, at bedtime, for 3 years.

    Drug: Atropine Ophthalmic 0.05%

  • Active comparator
    High dose atropine

    Atropine 0.5% sulphate ophthalmic solution should be administered, one drop in each eye, once daily, at bedtime, for 3 years.

    Drug: Atropine Ophthalmic 0.5%

Interventions

  • DrugAtropine Ophthalmic 0.05%

    Atropine 0.05% sulphate ophthalmic solution

  • DrugAtropine Ophthalmic 0.5%

    Atropine 0.5% sulphate ophthalmic solution

06

What researchers measure

Primary outcomes

  1. Progression of axial length in mm from baseline to t = 36 months.

    Time frame: 3 years

Secondary outcomes

  1. Progression of axial length in mm from baseline to t = 60 months.

    Time frame: 5 years

  2. Progression of spherical equivalent of refraction in dioptres from baseline to t = 36 months. compared to atropine 0.5% treatment.

    Time frame: 3 years

  3. Progression of spherical equivalent of refraction in dioptres from baseline to t = 60

    Time frame: 5 years

  4. Proportion of subjects who show ≤ 0.20 mm (good response); 0.2 - 0.3 mm (acceptable response), and > 3 mm (nonresponse)

    Time frame: 3 years

  5. Proportion of subjects who progressed to high myopia (AL 26+ mm)

    Time frame: 3 years

  6. Change in visual function (BCVA, contrast sensitivity, and glare)

    Time frame: 3 years

  7. Frequency and type of treatment-related (serious) adverse events as assessed by CTCAE v5.0 (=safety)

    Time frame: 3 years

  8. Proportion of non-adherence

    Time frame: 3 years

  9. Difference in health related quality of life

    Time frame: 5 years

07

Study locations

20 sites
  • Flevoziekenhuis
    Almere Stad, Netherlands
  • OLVG, locatie Oost
    Amsterdam, Netherlands
  • Ophthalmologistenpraktijk Delfland
    Delft, Netherlands
  • Reinier de Graaf Gasthuis
    Delft, Netherlands
  • Deventer Ziekenhuis
    Deventer, Netherlands
  • Albert Schweitzer ziekenhuis
    Dordrecht, Netherlands
  • Bergman Clinics - Ede
    Ede, Netherlands
  • Admiraal de Ruyter Ziekenhuis
    Goes, Netherlands
  • Frisius MC
    Heerenveen, Netherlands
  • Oogcentrum Noordholland
    Heerhugowaard, Netherlands
  • Leiden University Medical Center
    Leiden, Netherlands
  • Bergman Clinics - Lelystad
    Lelystad, Netherlands
  • Maastricht UMC+
    Maastricht, Netherlands
  • St. Antonius
    Nieuwegein, Netherlands
  • Radboudumc
    Nijmegen, Netherlands
  • Erasmus Medical Center
    Rotterdam, Netherlands
  • Haga Ziekenhuis
    The Hague, Netherlands
  • Oogkliniek Den Haag
    The Hague, Netherlands
  • Ziekenhuis Rivierenland Tiel
    Tiel, Netherlands
  • Elisabeth-TweeSteden Ziekenhuis
    Tilburg, Netherlands
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05667454
Lead sponsor
Erasmus Medical Center
Collaborators
ZonMw: The Netherlands Organisation for Health Research and Development
Responsible party
Caroline C.W. Klaver, MD (Prof. dr. C.C.W. Klaver, Erasmus Medical Center) — Principal investigator
First posted
Dec 28, 2022
Start date
Dec 19, 2022
Primary completion
Apr 24, 2029 (estimated)
Completion
Apr 24, 2029 (estimated)
Last update
Sep 14, 2026

Study contacts

C.C.W. Klaver, Prof. Dr.
principal investigator · EMC

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion