Background: Glaucoma has been declared to be the second most common cause of blindness in adults in India. Glaucoma was undetected in more than 90 % of individuals identified in the population studies. Aim& Objective: The aim of this study is to compare the non contact tonometer (the NIDEK NT 510) with the Goldmann applanation tonometer (GAT) and to determine the intraocular pressure readi ngs in healthy and glaucomatous population. Methodology: This is a Hospital based conducted at tertiary care centre of banaskantha and patan district of Gujarat Results: Demographic profile of the study showed that males 157 (54%) were more than the females 132 (45.67%) in the normal individual. In glaucoma patients males 91 (67.91%) were more than the females 43 (32.08%). In our study there was linear correlation between age and IOP in both eyes. Higher IOP was found in both > 50 years age group depending on the instrument used. In our study, in normal patients the IOP mean±SD values of both NCT and GAT was 16.15±4.46 and 15.87±4.58. From these results, IOP readings taken by NCT and GAT readings were found to be in 12-20 mm Hg in normal group. From the above results, these studies revealed that there were no significant differences in IOP readings taken by both NCT and GAT in normal and glaucoma individual. In the present study, intraocular (IOP) recorded by NCT is slightly higher than the GAT. Conclusion: From these studies we conclude that both the instruments important for measurement of IOP readings for early diagnosis of Glaucoma. There was a significant difference between the two tonometers if the IOP readings more than 21 mmHg. There was no significant variation in readings of IOP were taken NCT and GAT at <10 and 10-20 mmHg