Phacoviscocanalostomy in pseudoexfoliation glaucoma versus primary open-angle glaucoma.

OBJECTIVE

To compare the outcome of phacoviscocanalostomy in pseudoexfoliation glaucoma (PEXG) versus that in primary open-angle glaucoma (POAG).

DESIGN

Prospective comparative study.

PARTICIPANTS

Sixty eyes of 60 patients who underwent phacoviscocanalostomy for cataract and medically uncontrolled PEXG (30 eyes) or POAG (30 eyes).

METHODS

Success rate was based on intraocular pressure (IOP) reduction and need for antiglaucoma medication. Visual acuity (VA) and complication rates were secondary outcomes.

RESULTS

The mean follow-up was 19.7 months (range, 12-36 months). The mean IOP values in both groups were significantly less than the preoperative values at all postoperative intervals (p < 0.001). From 1 month onward, the decrease in IOP was more dramatic in PEXG eyes than in POAG eyes (p < 0.05). At last visit, the mean percentage of IOP reduction was 49.7% in the PEXG group and 30.9% in the POAG group. All study eyes required decreased antiglaucoma medications and showed improved VA postoperatively. Transient complications included Descemet's membrane microperforations, macroperforation, zonular dehiscence, and postoperative IOP spike. No eyes developed trabeculectomy-type bleb, hyphema, fibrin exudation, or bleb-related complications.

CONCLUSIONS

Phacoviscocanalostomy achieved excellent IOP control and VA improvement in both PEXG and POAG groups. PEXG demonstrated greater IOP reduction and fewer postoperative medications than POAG. The complication rate was low and did not affect surgical outcome. Phacoviscocanalostomy can be an effective and safe surgical alternative to phacotrabeculectomy in both groups of patients.