Objectives: To evaluate the complications of Nd:Yag laser when applied onpostoperative posterior capsule opacification (PCO), following extra capsular cataract extraction (ECCE) with intraocularlens (IOL). Design: Analytical and descriptive study. Setting: Eye OPD of DHQ Hospital, PMC and Clinic of ProfessorZia ud Din Ahmad, Faisalabad. Period: From Jan 2006 to Jan 2007. Material & Methods. There were 120 patients;age ranged from 15 years to 80 years with post operated extra capsular cataract extraction with posterior capsularopacification. A Proforma was made which included detailed history of diabetes, hypertension, time period of cataractextraction, other relevant surgical or medical history, and examination e.g. Visual acuity, slit lamp examination,intraocular pressure measurement (applanation tonometry) dilated posterior capsule examination and slit lampbiomicroscopy etc. The patients were kept under observation for 5 hour and called for follow up after one week.Results. Out of 120 patients 70 eyes showed visual improvement from 6/18 to 6/6 (58.34%), while 30 Shown visualacuity improvement from count figures to 6/24 (25%), mild anterior uveitis occurred in 8 cases (6.67%), corneal damagein 2 cases (1.6%) while transient raised Intraocular Pressure (IOP) in 7 cases (5.83%). The damage to IOL observedin 3(2.5%), the corneal damage was seen in 2 cases (1.67%). Conclusions: The Nd; Yag Laser is very effective, cheapand easy mode of treatment for PCO with minimal post laser complications.