Improvements in the Lasik (Laser in Situ Keratomileusis) method of eye surgery could mean more people can be treated, it has been reported.
A "one treatment fits all" mantra has until now characterised the Lasik approach, but the latest lasers and iris recognition technology allows the procedure to be customised according to the patient.
As a result, 20/20 vision can now restored for an increased number of people - while night vision problems can also be eradicated.
"Laser surgery used to be performed with standard technology that treats only the prescription of the eyes," Sheraz Daya, an eye surgeon at the Centre for Sight in East Grinstead, West Sussex, told the Times.
"Patients who had night vision problems, very high or complicated prescriptions, thin corneas or large pupils were simply not suitable. But with Zyoptix, many more of these patients can now be treated."
Dr Daya believes that 25 per cent more people can now have their sight corrected than before.
Better outcomes can also be expected, although the procedure does come at increased cost.