Narrator: This is Science Today. While new laser treatments can correct near sightedness, ophthalmologist Doug Holsclaw of the University of California, San Francisco says some patients may still need to wear glasses.
Holsclaw: One possible way around that, and some people do a similar thing with their contact lenses, is to correct one eye for distance and leave the other eye as a reading eye. That's called monovision. But those are the only people, over the age of 40 or 45 that beat the system and truly wear no glasses.
Narrator: Holsclaw says too many people think laser vision correction will make their eyesight perfect.
Holsclaw: You can't promise any individual person that their vision will be 20/20 after having this done and that's why when you counsel people, you try and tell them that there's a range and the laser will do exactly what you tell it to do, but everybody's going to heal a little bit differently and that's where the variability comes.
Narrator: Holsclaw recommends those interested in having this procedure, make sure they are clear about their options first. For Science Today, I'm Larissa Branin.