PURPOSE: To evaluate changes in intraocular pressure in healthy eyes dilated with tropicamide 1% and phenylephrine 2.5% (itrop) versus those
dilated with tropicamide 1% alone (appamide) using non-contact tonometer (NCT)
MATERIALS AND METHODS: A prospective comparative study was conducted on 110 eyes and grouped into Group A & Group B with 55
eyes in each group respectively. Patients less than 40 years without any ocular or systemic illness were included in the study. In both groups baseline
IOPwas recorded and one drop of combined phenylephrine 2.5% and Tropicamide 1% in Group Aand one drop of plain Tropicamide 1% in Group
B were instilled, after 45 minutes IOPwas recorded. Data analysis was done using paired t test
RESULTS: The mean IOP for Group A was 14.41mmHg at baseline and 15.25mmHg after dilation (P=0.0025).The mean IOP for Group B was
14.36mmHg at baseline and 14.35mmHg after dilation (P=0.0018).
CONCLUSION: A signicant increase in IOP is observed in both groups,but the increase is more signicant in Group A(combined tropicamide
1% and phenylaphrine 2.5%) when compared to Group B ( Tropicamide 1% alone