Tom is then shown testing out a new incisive laser machine.
The patient sits facing the laser machine while the doctor holds a special lens on the eye.
About 180 hospitals around the world now have the laser machines, which can cost up to $200,000 each.
For one thing, like laser machines, digital video disk players won't record.
"If they can buy a laser machine and pay it back quickly, they do it."
A great deal of research is now being concentrated on developing automatic laser cladding machines.
It also has a drill and a stone-zapping laser machine.
With new laser machines coming out all the time, it can be difficult for a consumer to sort out the facts.
It recently invested in a $25,000 laser machine for precise welding.
A man who raised the cash to buy a laser machine for a hospital is demanding his money back, because the equipment hasn't been bought.