Myopia in children and teenagers, Study finds its Progressio
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The aim of this work was to evaluate the progression of myopia in children and teenagers in a large prospective study. Myopia was defined as a spherical equivalent (SE) of less than –0.50 diopters (D). Data on refractive error, gender and age were collected in 696 optical centres in France, including 136?333 children (4–17 years old) in the analysis.

Progression of myopia was assessed between the first visit and the last visit over up to 6.5 years.

Results:
--Mean age was 11.3±3.8 years (55.0% of female).
--The proportion of children progressing more than -0.50 D per year was higher in age groups 7–9 years and 10–12 years and in children with SE less than –4.00 D at first visit, representing 33.1%, 29.4% and 30.0% of these groups, respectively.
--In multivariate analysis, progression during the first 11–24 months was higher in the 7–9 and 10–12 age groups (–0.43 D and –0.42 D, respectively), for higher SE at baseline (at least –0.33 D for SE less than –1 D) and for girls (–0.35 D).

To summarize different rates of myopia progression are linked to sex, age groups, and the severity of myopia.

Source: https://bjo.bmj.com/content/early/2021/03/11/bjophthalmol-2020-318256?rss=1
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