Two-fifths of patients undergoing a new laser eye treatment end up with "super-vision", it was claimed yesterday.
The revolutionary new technique at the Z-LASIK clinic in London boasts a 100pc success rate at correcting short sightedness to 20/20 "normal" levels.
But in 40pc of cases, patients are said to go home with 20/12 "super-vision".
They can read small letters on a vision chart as well from 20ft as most people can from 12.
20/12 is close to the 20/10 physical limit where it is impossible to see better given the number of light sensitive cells in the eye.
At this point, known as "ultimate vision", a person's eyesight is twice as good as "normal".
Research based on 307 patients attending the clinic over the past 12 months showed that 95pc were given vision better than 20/20.
LASIK uses light from a "cool" laser to reshape the front surface of the eye. The newer version of the treatment, Z-LASIK, employs two lasers and computer technology to remove a microscopic layer of corneal tissue in less than 20 seconds.
The treatment costs £1,500 per eye.