Purpose: To study the difference in the anterior chamber angle following cataract surgery in senile cataract . Methods:In this observational study, 48 were diagnosed with senile cataract and posted for small incisional cataract surgery with PCIOL implantation underwent thorough ocular examination. Anterior chamber angle was evaluated with gonioscopy and VanHerick‘grading while ACD, AL,LT and VCD were measured through biometry prior andafter cataract surgery, and difference was estimated. Results:Out of 48 participants, males consisted of (47.92%) (n= 23) and females consisted (52.08%) (n=25) of the study population. The 19 (100%) participants with Shaffer‘s grade 4, 17 participants with grade 3 (100%), 8 (72.73%) with grade 2 and 1 (100%) patient withgrade 1 angle preoperatively on gonioscopy became grade 4 post cataract surgery and IOLimplantation. A good association was found between cataract extraction and deepening of angle. The mean ACD difference was 0.53mm and mean VCD difference was 1.15mm forprior and after cataract surgery values which was statistically significant (p<0.001). Conclusion:This study proves that ACA and ACD change significantly following cataractsurgery with PCIOL implantation in patients with senile cataract. All patients demonstratedan increase in angle of anterior chamber as well as ACD and VCD post cataract surgery.The study shows that the patients with narrow angle or susceptibility to angle closure infuture, on undergoing cataract surgery, also benefit by preventing future development ofPAC/PACG or by treatment of a preexisting case.