"Further studies needed" to analyse OK lens effectiveness

"Further studies needed" to analyse OK lens effectiveness

By Adrian Galbreth

Further studies will be needed before experts can confirm the effectiveness of new orthokeratology (OK) contact lenses, which have been shown to slow or halt the progression of myopia in tests.

With myopia being one of the most widespread eye problems in the world, it is hoped that the latest study, led by Professor Helen Swarbrick at the UNSW Research in Orthokeratology Group, will soon lead to the development of commercial lenses to help sufferers.

However, she told Science Alert that it may be some time before the lenses make it onto the market, as tests need to be carried out to determine factors such as the recommended length of wear, with the findings then published in a scientific journal.

"We are also investigating whether OK lens designs can be individualised to target optimum myopia control for every myopic child," she explained.

Myopia incidence is currently worse than ever in Asia, with an estimated 50 per cent of all Chinese children suffering from some form of short-sightedness, compared with just 15 per cent in the 1970s.

by Martin Burns

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