Axial Myopia, Refractive Errors
Conditions
Keywords
Myopia, Axial Myopia, Children, Refractive Error, Riboflavin, Vitamin B2
Brief summary
The investigators plan on using riboflavin (a Vitamin that can easily be taken orally each day) and having the children involved in the study play outside (where there is UV light created by the sun) in order to prevent the eye from becoming progressively more near-sighted.
Detailed description
Myopia is equivalent to the colloquial term known as near-sightedness. This, in short, means that the image of one's environment is projected in front of the retina (rather than directly on the retina, which is ideal). Of course, glasses can be used to correct the image disparity that is created by being near-sighted (that is why a lot of people need glasses for blurry vision). However, glasses and spectacles and contacts do not correct the underlying problem. Most near-sightedness is due to the eye being "too long" and therefore the image projects in front of the retina. Ideally, if we could prevent the eye from becoming abnormally "long", then we could prevent the progression of near-sightedness. Indeed, a child may only be slightly near-sighted early in life, but as he/she continues to perform activities within an arms length of their environment, they can become progressively near-sighted. Besides spectacle correction, people have tried topical atropine drops (medicated eye drops) and rigid contact lenses (orthokeratology) to attempt to correct near-sightedness. Atropine drops take a lot of cooperation from parent and child. Orthokeratology also requires a lot of cooperation, but also, does not permanently stall myopic progression. The investigators suggest a different means of potentially preventing near-sightedness from getting worse (and thus prevent the eye from getting "too long"). The investigators plan on using riboflavin (a Vitamin that can easily be taken orally each day) and having the children involved in the study play outside (where there is UV light created by the sun) in order to prevent the eye from becoming progressively more near-sighted.
Interventions
DRUGOral Riboflavin
The intervention doses will be 200 mg oral riboflavin and 400 mg oral riboflavin doses; the placebo dose will be 0 mg of oral riboflavin
Sponsors
University of Missouri-Columbia
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)
Masking description
The researchers involved, the project investigator, and the patients will be blinded from knowing which patient will get which treatment by assigning a number to each patient and having that patient take that number to the pharmacy where they will pick up their riboflavin. The dosage of riboflavin given to the patient will be chosen by the "number" that the patient gives to the pharmacy. There will be no labels revealing the dose of riboflavin that the patient receives. There will be placebo dose which contains a small dose of riboflavin that has been shown to not reach therapeutic levels.
Intervention model description
This is a 1:1:1 double-blinded randomized study for children ages 6-12 year old with axial myopia who will be treated with one of three different doses of oral riboflavin. Expected number of participants is 100.
Eligibility
Sex/Gender
ALL
Age
6 Years to 12 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy children ages 6-12 years old with myopia more than 0.50 D and astigmatism no more than 1.5 D. * Caretakers who choose to enroll their child in the study must agree to participate in the study on their own will after knowledge of potential alternatives (spectacle correction, orthokeratology, atropine eye drops, etc.) are explained to the patient's caretaker.
Exclusion criteria
* Known allergy to riboflavin * Birth history of premature birth * Developmental delay or other neurological or mental conditions * Major systemic health problems * Significant anisometropia more than 1.5 Diopters * Any other eye condition which may complicate interpretation of data including: congenital glaucoma, congenital cataract, ectatic corneal condition, amblyopia or strabismus.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in cycloplegic refraction | 3 years | We will measure the average change in cycloplegic refraction over 3 years in each treatment/study group. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in axial length | 3 years | Change in axial length over 3 years in each treatment/study group. |
| Change in keratometry values | 3 years | Change in keratometry values over 3 years in each study group. |
| Change in uncorrected best visual acuity | 3 years | Change in uncorrected best visual acuity over 3 years in each study group. |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORMohannad Al-Samarraie, MD
Virginia Commonwealth University
Outcome results
None listed