Comparative Study of one site versus two site Phacotrabeculectomy

1. Renuka Srinivasan
2. Anjali A
3. Shivaprasad C

Jawarhalal Institute Of Medical Education And Research (JIPMER) Pondicherry India

Purpose: to compare the control of intraocular pressure and requirement of antiglaucoma medications after one site and two site phacoemulsification and trabeculectomy.

Materials and methods: This was a prospective study involving two groups of patients. 40 eyes of 40 patients were involved in the study. One site group underwent superior phacoemulsification and trabeculectomy and two site group underwent superior phacoemulsification and superotemporal trabeculectomy through two separate incisions.

Results: Preoperative intraocular pressure(IOP) in the one site and two site groups were 20.05 ± 3.17 and 21.55 ± 6.9 mm of Hg respectively. Postoperatively, by 6 months, the mean IOP was 14.5 ± 4.27 and 14.15 ± 3.21mm Hg respectively in the one site and the two site group (p=0.38). Postoperative day 1 IOP was higher in the two site group. Both surgical strategies were able to eliminate the need for antiglaucoma medications in most eyes for the entire study period. Mean preoperative visual acuity of patients improved significantly in both the groups by the end of the study period. The difference in the mean surgically induced astigmatism was not found to be statistically significant

Conclusions: There is no statistically significant difference in the degree of reduction of intraocular pressure between one site and two site phacoemulsification and trabeculectomy and the requirement of glaucoma medications also did not differ significantly between the two groups. Surgically induced astigmatism was comparable after one site and two site surgery.