Laser has an upper edge in the treatment of haemorrhoids compared to conventional haemorrhoid surgery with regards to pain and faster healing. It is associated with lesser complications and better preserving the physiology of the anal canal and anal cushions. 

Surgeons can remove the haemorrhoidal mass by using a CO2 laser or by using a Diode laser to do laser haemorrhoidoplasty. 

In laser haemorrhoidoplasty, laser energy is delivered into the haemorrhoidal mass causing fibrosis by initiating protein denaturation. 

Laser works with photoablation, wherein laser passes through water and breaks the H2O bond. Breakage of the bond leads to shrinkage in the haemorrhoidal tissue.

Photo coagulation causes protein denaturation and sealing of the blood vessels.

Photovaporization occurs when haemorrhoids absorb the laser energy and fibrosis occurs leading to fixation of the tissue in 6-8 weeks.

Laser haemorrhoidoplasty is associated with some degree of pain and will require analgesia. However, there is much less pain compared to conventional surgery.