A very recent theory has surfaced linking the amount of time spent outdoors as a potential myopigenic trigger. A study carried out by Jones et al, 2007, showed that children who had increased participation in outside activities exhibited a reduction in myopia progression versus their less active counterparts. The Sydney Myopia Study (Rose et al, 2008) also found a protective effect from greater amounts of exposure to outdoor lighting. It is hypothesized that light intensity may play a role.
The Health Promotion Board of Singapore has made it a public health initiative to reduce myopia progression in children. As prevalence rates amongst school aged children have reached alarming levels in many East and South-East Asian populations, parents are reminded with park signs and colourful posters to “Keep Myopia at bay, go outdoors and play!“