KRYS GROUP, a leader in the French optical retail sector, and the Poitiers university hospital, started in 2013 a large-scale research on the progression of myopia among French children aged between 4 and 17 years old. The latest results of this ongoing research, which was based on data collected for more than 130,000 nearsighted children in 696 KRYS GROUP shops between 2013 and 2019, focus on the impact of factors such as age, gender and myopia severity on rates of progression. They have just been published in the British Journal of Ophtalmology.
For the whole group of surveyed children, Dr. Nicolas Leveziel, the study director, and his team found out that myopia was progressing at a rate superior to 0.5 D per year for 25 percent of them. However, the proportion of progressors was significantly higher in the 7-9 years old group, 33.1 percent, and in the 10-2 years old group, 29.4 percent, while the same ratio was calculated at under 22.1 percent for all other age groups.
The research also revealed a higher proportion of progressors among survey participants with higher corrections needs. 30.0 percent of children with a spherical equivalent equal or inferior to -4.0 D saw their myopia progress by more then 0.5 D per year, versus 27.5 percent for the other children. Gender analysis also showed that myopia progression was more often observed among girls, 25.6 percent of progressors, than among boys, 24.1 percent.
Based on these results, KRYS GROUP stressed the importance of an early screening of myopia and the important role of opticians. The company reminded that orthokeratology contact lenses and atropine eye drops had shown positive results in the slowing down of myopia progression, however with the restriction that the latter are only available at hospitals in France. It also singled out CooperVision’s MiSight 1 day contact lenses and Hoya’s MiYOSMART eyeglass lenses as new and efficient products for myopia control.