Tuesday, October 26, 2010

Visual Activity Prior to and Following the Onset of Juvenile Myopia

....Before myopia onset, future myopic children's near work activities did not differ from emmetropes. Those who became myopic performed fewer outdoor/sports activity hours than emmetropes prior to, at, and after myopia onset. Myopia onset may influence children's near work behavior, but the lack of difference prior to onset argues against near work playing a major causative role. Less outdoor/sports activity prior to myopia onset may exert a stronger influence on development than near work. ....

Comments: Near work may not be causative to myopia's initial development, but may be very important to myopia's progression because those who spend less time outdoors do develop more myopia... If you are indoors you tend to do more close activities. Maybe it is not the amount of near work prior to the development of myopia that is important, but rather how the pre-myope indivdiual reacts to the nearwork. Nearwork then could still be, at least in part, a cause of the myopia development.

It looked like they did not determine if Nearpoint Induced Transient Myopia was noted in this population or if they even assessed its presence. They only looked at the development of the nearsightedness....and not other potential myopiogenic factors. Go to http://scholar.google.com/scholar?q=Nearpoint+Induced+Transient+Myopia&hl=en&as_sdt=0&as_vis=1&oi=scholart for more info on this topic. DM

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