Sunny Hope for the short-sighted

I'm short-sighted and I was just reading this article:
Don't stare at the sun or you'll go blind, mothers rightly warn their children. But a few hours of safe playing in the sunlight could, on the other hand, do wonders for their eyesight. If scientists are right, the antidote to short-sightedness — a blight in Singapore where up to 90 per cent of students reportedly don spectacles by the time they leave school — is something this sunny island has plenty of exposure to bright light for two to three hours daily, such as during outdoor activity, helps regulate the eye’s growth, reducing the risk of myopia in children, an Australian Research Council study has found.

But I already wear spectacles and I don't know if playing in the sun would help me improve my eye-sight... o.0
P.S.: This article can also be found in the newspaper(s)...... ^.^