Study of Theories About Myopia Progression (STAMP)
Completed · Not applicable
Conditions studied: Myopia
In brief
At this time, we do not know what causes a child to become more nearsighted (myopic). STAMP will help us better understand nearsightedness in children. Children will be randomly chosen to wear regular glasses (single vision lenses) or no-line bifocal glasses (progressive addition lenses) for the first year of the study. All children will wear regular glasses for the second year of the study. STAMP will compare how the eye changes shape in the two groups to help us understand why children become nearsighted. The two theories of myopia progression that are being evaluated are based on different factors. One theory is based on environmental factors such as extended near work while the other theory is based on genetically coded factors.
Key facts
- Study ID
- NCT00335049
- Run by
- Ohio State University
- People needed
- 85
- Starts
- 2006-12-01
- Expected to finish
- 2010-07-01
- Last updated by the study team
- 2022-10-28
Who can join
Age: 6 and older, up to 11. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- 6 to 11 years of age
- Best corrected vision of at least 20/30 in each eye
- Birth weight > 1250g
- (The criteria below will be evaluated at a screening visit to find out if the child can participate)
- Accommodative lag >= 1.30 D (for a 4D stimulus)
- At least -0.75 D myopia in each meridian measured with cycloplegic autorefraction but not more than -4.50 D in each meridian in each eye
- Esophoria at near if more than -2.25 D spherical equivalent (high myopia)
- Astigmatism < 2.00 DC in each eye
- Anisometropia < 2.00 D
You may not qualify if…
- Strabismus (eye turn)
- History of contact lens wear
- History of previous bifocal wear
- Diabetes mellitus
Where it is running
- The Ohio State University College of Optometry — Columbus, Ohio, United States
Full record on ClinicalTrials.gov
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