BMJ Group Medical Reference
Your doctor can treat your warts with a laser, which is a highly focused beam of light.
This used to be a popular way to treat genital warts. But it isn't used as much any more because it doesn't work better than other methods. Also, it needs to be done by someone who is experienced in using a laser, and the equipment is expensive.
One good study (a randomised controlled trial) found that laser treatment worked as well as surgery for getting rid of genital warts and stopping them coming back.  The side effects of laser treatment include pain and scarring. 
Two studies in pregnant women have found that laser treatment can have side effects. Women have needed extra treatment to heal their wounds and, in some women, their waters have broken early after treatment. Other problems included kidney infections, wound infections, and a cut in the rectum.  
A laser focuses light in a way that makes it able to cut through things. Surgeons sometimes use lasers when they need to do delicate operations.
randomised controlled trials
Randomised controlled trials are medical studies designed to test whether a treatment works. Patients are split into groups. One group is given the treatment being tested (for example, an antidepressant drug) while another group (called the comparison or control group) is given an alternative treatment. This could be a different type of drug or a dummy treatment (a placebo). Researchers then compare the effects of the different treatments.
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