Researchers test treatment for short-sighted kids.

"Researchers at the University of New South Wales are running a trial of special contact lenses that they hope will be able to correct short-sightedness in children.
The treatment, known as orthokeratology, is used widely in Asia.
Associate Professor Helen Swarbrick says there is compelling new evidence that the lenses can do more than simply correct short-sightedness.
'The excitement in this new research is that if we use these lenses in children we might be able to slow down or stop the short-sightedness,' she said.
Associate Professor Swarbrick explains how they are used.
'The lenses are worn overnight during sleep. During sleep they reshape the front of the eye,' she said.
'Then in the morning the patient can remove the lenses and see clearly all day without contact lenses.'
Unlike day time lenses, these are made of a hard plastic which shapes the cornea.
The treatment is widely used in Asia, where up to 85 per cent of people are myopic."