Anal fissure is common cause of anal pain. Exact aetiology of anal fissure is not known, but it is commonly seen due to constipation and hypertonic anal sphincter conditions. Studies on the method of treatment of anal fissure ranges from medical application to surgery. We have study of 200 cases of fissure in Ano for comparing in between treatment options of anal dilatation (AD) and lateral anal sphincterotomy (LAS). Patients were divided in two groups by randomly.

 In our study it has been shown that all the patients after anal dilatation significantly reduces the anal pain and provide symptomatic relief that is slightly better than lateral anal sphincterotomy.