Sydney: They are worn only at night and removed in the morning, enabling normal vision by day without the need for spectacles or other contact lenses. Myopia or shortsightedness in children can be slowed or even halted by wearing these special contact lenses.
Possibly genetic factors, dietary change and a surge in people doing more close work, viz reading, watching TV and looking at computer screens may explain why myopia has risen so dramatically. The results were compelling: the study showed plainly that for most children wearing an OK lens inhibited the elongation of the eye, while the normal day lens did not. IANS
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