Background: Primary angle closure glaucoma (PACG) contributes considerably to the global burden of visual impairment.
Objective: To prospectively evaluate changes in anterior chamber width after laser iridotomy in primary angle closure suspect using GONIOSCOPY and BIOMETRY.
Material and Methods: This was a prospective non-randomized interventional hospital based study. 50 eyes of 29 patients with primary angle closure suspects (PACS) requiring Laser Peripheral iridotomy were included in the study.
Results: The study showed a statistically significant change between pre PI and post PI peripheral anterior chamber depth(PACD) 1.1\(\pm\)0.4 Vs 2.70\(\pm\)0.8(P<0.05) Statistically significant change in gonioscopic grading between pre and post PI, superior (0.20\(\pm\)0.40Vs2.20\(\pm\)1.10), inferior (1.0\(\pm\)1.0Vs.2.50\(\pm\)0.90), nasal (0.3\(\pm\)0.6Vs.2.40\(\pm\)0.90), and temporal quadrant (0.4\(\pm\)0.8 Vs. 2.30\(\pm\)1.0) (P<0.05). There was an overall increase of 2 units in Shaffer angle grading in all 4 quadrants. There was a significant decrease in IOP post iridotomy (16.44\(\pm\)2.70mmHg Vs 14.18\(\pm\)2.62mmHg),(P<0.05), almost 2mmHg of fall in IOP. The study showed statistically no significant change between pre and post PI biometry values-AXL and ACD.
Conclusion: Laser iridotomy produced a significant widening of the anterior chamber angle in patients with primary angle closure suspects as studied by gonioscopy and biometry. Gonioscopy is a viable tool to assess the effect of laser iridotomy.
