The aim of the present study was to identify the most common cause and the frequent stage of presentation in patients with neovascular glaucoma. Methods: The present study was a prospective observational study, 120 eyes of 10-patients who underwent ophthalmological examination and diagnosed as having neovascular glaucoma in one eye or both the eyes were included in the study for the period of one year. Results: The present study was conducted in 120 eyes of 100 patients out of which 90 patients had either eye involvement and 15 patients had both eyes involvement. All Patients were aged between 14-84 years with a mean of 57.59±12.6 years. Out of 100 patients, 80 (80%) were males and 20 (20%) were females. In the present study, most of the patients i.e., 60 (50%) presented in rubeosis iridis stage, 36 (30%) in angle closure stage and 24 (20%) in open angle stage. Out of 120 eyes, 78 (65%) had diabetic retinopathy in variable severity, 15 (12.5%) had inflammatory etiology, 12 (10%) had retinal vein occlusion and 12 (10%) had glaucoma (PXG and absolute glaucoma).Mean IOP in Angle closure stage is significantly higher than the mean IOP in other two stages (P = 0.000). Whereas there is no statistically significant difference between the mean IOP in rubeosis iridis stage and open angle stage (P= 0.950). Conclusion:In the present study, it was found that Proliferative diabetic retinopathy is the most common cause and rubeosis iridis is the most frequent stage of presentation in NVG.