Mandating comprehensive eye examinations for children where is the evidence sex dating in dallas north carolina
Similarly, the rate among white participants in the same age group moved from 25.8% to 34.5%.The rates for participants in older age groups increased even more, so that the overall average reached 33.5% among black participants and 43.0% among white participants.18These numbers are well below similar surveys in Asia, but Vitale says, “Given this evidence, and putting it together with the kinds of findings people were seeing in other countries, it seemed pretty clear that the prevalence had indeed increased.”For Mutti, that increase raises questions about the sampling and measurement that went into the data.Population surveys in Guangzhou, Singapore, and Taiwan point to these areas as hot spots for children becoming myopic earlier, with more of them being more severely myopic.411 But even as the precise factors responsible for the increase are still being debated and explored, a mounting body of evidence cites time spent outdoors as crucial to the healthy development of the eye.Although myopia is becoming more prevalent worldwide, some areas are more affected than others.(On the other hand, myopia is negatively associated with age-related macular degeneration.16) Young people afflicted with the most serious degree of myopia display few other symptoms, but middle-aged individuals with “high” (severe) myopia exhibit many pathologies of the eye.8Myopia stems from what amounts to a small though apparently important physical deformity: a lengthening of the eyeball along its horizontal axis.Myopia comes in varying degrees, depending on the extent of this distortion.“A myopic eye is an eye that’s kind of too big for its britches.
“In Guangzhou, the climate is hot and sticky for most of the year, and people get outdoors in the evening.
On the other hand, a rapidly growing body of research on populations in Asia is yielding strong evidence linking diminishing levels of exposure to outdoor light with a prevalence of myopia that is approaching epidemic proportions.13“Keep myopia at bay,” chirp colorful screensavers and wallpapers offered by Singapore’s Health Promotion Board.
“Go outdoors and play.” The irony of flashing messages on a computer monitor to get children away from that same monitor is not lost on the researchers who have been charting the rise of chronic nearsightedness in the region’s populations.
Surveys in the United States and most especially in Australia, for example, yield prevalence figures for the general population that are consistently much lower than comparable figures in Southeast Asia.1213The sharp region-specific disparity also appears to affect primarily the younger generation.
Among adult populations around the world, prevalence rates show less variation across countries (although future surveys are expected to show similar disparities in adult rates as today’s youth age).