The Cambridge Anti-myopia Study: variables associated with myopia progression

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Myopia progression is a significant concern in young individuals.
• Understanding factors influencing myopia progression is crucial for developing effective interventions.

Purpose of the Study:

• To identify variables associated with myopia progression.
• To investigate interactions between accommodative function, myopia progression, age, and treatment effects in the Cambridge Anti-Myopia Study.

Main Methods:

• 142 subjects (aged 14-21) with myopia were assigned to contact lens treatment, vision training, combined treatment, or control groups.
• Interventions aimed to improve static and dynamic accommodation.
• Measurements included spherical aberration, accommodation lag, AC/A ratio, accommodative facility, ocular biometry, and refractive error over 2 years.

Main Results:

• No significant difference in myopia progression was observed between groups at 24 months.
• Age, lag of accommodation, and AC/A ratio were significantly associated with myopia progression.
• A significant short-term treatment effect of contact lenses was noted in younger subjects (under 16.9 years) at 12 months, but this was not sustained.

Conclusions:

• Age, lag of accommodation, and AC/A ratio are significant predictors of myopia progression.
• Optical treatments may offer short-term benefits for younger individuals by altering the visual system, but long-term efficacy requires further study.