This study investigated the working distance and head posture of Chinese myopic children while reading, writing and playing video games. The average working distance across all tasks was 24.5cm, with the shortest working distance and largest head declination observed while children played video games. There was no influence of level of myopia or accommodative lag on working distance or head position.
In myopic children, interventions to slow progression are warranted to prevent the development of high myopia and subsequent pathology and also to reduce the economic burden caused by uncorrected and pathologic myopia. This IMI Report describes the latest advice on preventing the development and progression of myopia – read the summary here.
This IMI Report takes a deep dive into pathological myopia, including its prevalence and defining characteristics. The role of optical coherence tomography (OCT) is discussed, as well as emerging treatment options. Read the summary here.
This IMI Report discusses the prevalence of myopia and its impact on both the individual and society. It highlights gaps in our understanding of myopia and provides evidence to support and advocate for developing appropriate approaches and policies to manage myopia. Read the summary here.
A vision-screening program was able to provide data before and after Chinese schoolchildren were confined to home learning during the COVID-19 pandemic. Overall, more hours were spent indoors and less time was spent outdoors during this time, across all age groups. The younger schoolchildren had increased incidence of myopia and faster progression, whereas an increase in the prevalence of high myopia was found in the older children.
This study investigated the accuracy of the Brien Holden Vision Institute (BHVI) myopia calculator in predicting myopia progression. The extent of myopia progression over 1-2 years in children corrected with single vision spectacles was accurately predicted by the BHVI myopia calculator in 32-38% of 7-13 year old Hong Kong children. Around one-third progressed more and one-third progressed less than the range predicted by the calculator.
This meta-analysis investigated the effectiveness of orthokeratology in controlling the progression of anisomyopia (unilateral myopia or bilateral anisomyopia) in Chinese children. Total anisomyopia decreased at 2-year follow up, indicating orthokeratology may be a safe clinical method to slow myopia progression coupled with reducing interocular axial length difference.
The long-term safety of contact lens wear in children is a known concern amongst parents and eye care practitioners alike. This six year study demonstrated successful contact lens wear in a group of 8-12 year olds, with no serious contact lens adverse events reported and no change in clinical ocular signs compared to pre-contact lens wear. This demonstrates that children as young as 8 can successfully wear daily disposable contact lenses for multiple consecutive years.
This meta-analysis of 5 studies of 1, 6 and 12 months duration found that slower axial growth is evident when using orthokeratology in conjunction with atropine as a combined therapy compared to orthokeratology alone. A slowing effect of 0.09mm was seen with the combined approach for up to a 12 month follow-up period. Longer data was not available for the meta-analysis.
Children aged 6 to 8 years old in China were found to experience a mean -0.30D myopic shift and a significant increase in myopia prevalence during a 5-month long COVID-19 home confinement period. Due to their age and corresponding critical stage in visual development, the change in the children’s environment and lifestyle may have been more responsible for their increased myopia than the increased online learning.