Patients who are set to correct their sight with laser eye surgery should stop wearing their contact lenses before having evaluation for the treatment.
This is advice given by Marguerite McDonald of the American Academy of Opthalmology and reported in the Chicago Tribune.
According to the authority, people who wear soft contact lenses should leave them out for a fortnight before they have their first evaluation for the operation.
Hard contact lens wearers should switch to their glasses four weeks before, while those with toric soft contact lenses to correct astigmatism need to leave them out for three weeks.
Ms McDonald explained that contact lenses can change the shape of the cornea and so should be left out to help surgeons measure the eye properly.
Roger Biss recently told the Daily Mail about his experience of having a Lipshitz Macular Implant in his eye to combat his age-related macular degeneration.
The first such patient in Europe or America, Mr Biss said that the implant - created by Israeli doctor Isaac Lipshitz - has eliminated the blind spot in his left eye and improved his ability to see detail.
by Adrian Galbreth