This study measured central and relative peripheral refraction (RPR) in children aged 6-7 years and 12-13 years at baseline and again one year later. There was no correlation found between central and peripheral refraction in the younger group. In the older group, more hyperopic temporal RPR was correlated with a myopic shift, but only explained 10% of the variance in refraction after 12 months.
It’s known that emmetropizing children undergo axial eye growth of around 0.1mm per year. Is this amount of growth in myopes also ‘physiologic’? In this study, data from six myopia control clinical trials was analyzed to find the axial growth component which did not result in a change in refraction. For myopes, this ‘physiologic’ growth appears to be less than 0.1mm per year, which has implications for judging progression and treatment success.
A country-wide intervention to increase outdoor time in 5-6 year olds resulted in the prevalence of myopia decreasing from 15% in the 2014 cohort (before the intervention) to 8% in 2016 cohort (exposed to the intervention for up to two years) and was stable for three years thereafter. Increasing outdoor time works!
A combination of higher baseline myopia, parental myopia and faster 3-year progression in earlier childhood were strongly predictive of teenage high myopia in this study. Young patients with these combination of factors should receive closer clinical monitoring and timely interventions to slow myopia progression.
What equipment do you need to get started with myopia management in practice? Here we take you through the recommendations of the International Myopia Institute Clinical Management Guidelines Report, with advice on testing and equipment required. There are also suggestions for how you can get started if you don’t have access to all the equipment described, plus what is ideal and what is necessary for best practice.
Axial length (AXL) has been well established as the critical measurement in myopia control research. The measurement accuracy and link to disease risk make AXL increasingly important in a clinical setting. But what else should we measure in the myopic eye? Does the cornea change as well? Will we end up doing away with refraction? Read more on measuring the whole eye in myopia.
How do you approach communicating with parents about myopia when they reject even standard single vision correction for their child? This is especially concerning given that even a full strength single vision correction is a better choice than under- or un-correction of myopia – for both myopia progression as well as the child’s functional abilities. This clinical problem is more common than you might think, especially in some regions of the world.
How does the normal emmetropization process in childhood influence refraction shifts in pseudophakes? Should a myopic shift in a pseudophakic child be viewed as myopia progression? How should they be managed and is myopia control needed? This blog covers important considerations in managing these atypical myopes.
How can you tell if your myopia management strategy has been a success? Our new Myopia Profile ‘Managing Myopia Guidelines’ infographics translate research into practice, providing advice on gauging success by both refraction and axial length outcomes. Given that refraction is universally measured in clinical myopia practice, there is particular emphasis on understanding how much refraction change after a year of treatment indicates whether expected efficacy for that intervention has been attained.