This study compares the outcomes and complications associated with Powered and Non - Powered instrument techniques in patients undergoing Endoscopic Dacryocystorhinostomy (Endo DCR). An Observational, longitudinal study was carried out on 146 cases of Chronic Dacryocystitis who were divided into two equal groups. One group underwent Endo DCR by powered instruments (Powered group - PG) and the other group by non-powered technique (Non Powered group - NPG). Operating time was taken from incision to tucking of flaps of the lacrimal sac mucosa. Postoperative assessment was done on 7th, 30th and 180th day of surgery. Subjective assessment was based on relief from epiphora while objective on lacrimal sac syringing (LSS) and Diagnostic nasal endoscopic (DNE) findings. Both the groups were compared for the success rate and complications. Out of 146 cases operated, 6 cases were cancelled due to intraoperative bleeding. 109 Endo DCR were done on right side while 31 cases were operated on left side. The mean operating time in NPG is 48.74 min and in PG is 64.91 min with p=<
0.001 which is highly significant. Postoperative success rate among PG and NPG is 88.2% and 84.7% (p=0.829) while complications for both the groups were statistically not significant (p=0.701). Non-powered technique showed significant reduction in operating time compared to powered drill for Endo DCR. No significant difference was found between the powered and the non-powered groups in terms of success rate and complications surgery, Head of the Dept, Sri Devaraj Urs Academy of Higher Education and Research Medical College azeem_hn@yahoo.co.in Vast clinical knowledge, Surgical skills, with a passion in research, great teacher, motivator for junior colleagues and students, dedicated surgeon for service to mankind.