AIM: To observe the clinical effect of transparent corneal incision phacoemulsification in cataract patients who had undergone different kinds of glaucoma filtration surgeries.

METHODS: Totally 43 cases(50 eyes), in which 23 patients with primary angle-closure glaucoma(group A, 26 eyes)and 20 patients with primary open angle glaucoma(group B, 24 eyes), all had undergone glaucoma filtration surgery for more than 6 months. Visual acuity, intraocular pressure, slit lamp, gonioscope, corneal endothelial cell counts, etc., were done before surgery.And transparent corneal incision phacoemulsification combined with artificial lens implantation operation were preformed, postoperative follow-up of 3 to 12 months, visual acuity, intraocular pressure, corneal endothelial cell counts and vision field, etc. were observed and recorded.

RESULTS: The visual acuity of 50 eyes(100%)increased with different degree postoperatively, 41 eyes(82%)with postoperative visual acuity ≥0.3; average preoperative intraocular pressure: group A 18.08±5.08mmHg(1mmHg=0.133kpa), group B 14.48±3.52mmHg; Postoperative follow-up average intraocular pressure: group A 13.65±3.51mmHg, group B 14.28±3.41 mmHg, intraocular pressure changed significantly pre and post-operation in group A(P<0.05), there was no significant difference between pre and post-operation in group B(P>0.05); Postoperative intraocular pressure of 1 eye in group A and 3 eyes in group B rose within three days post-operation, the intraocular pressure fluctuated between 21-33mmHg, with drug therapy and drug withdral when intraocular pressure epistrophy; Intraocular pressure was stable in the follow-up process.Corneal endothelial cell density: pre-operation group A was 2 293.57±352.24(cells/mm²), group B 2 658.14±458.69(cells/mm²), post- operation group A 2 175.95±379.16(cells/mm²), group B 2 442.97±477.30(cells/mm²), cell loss rate: 5.13% in group A, and 8.10% in group B. Postoperative visual acuity was related to vision field damage in patients, the more visual field damage, the longer the duration.

CONCLUSION: Visual function restore is stable in transparent corneal incision phacoemulsification in cataract patients who underwent glaucoma filtration surgeries; the intraocular pressure can be controlled effectively, and can further reduce the intraocular pressure of angle-closure glaucoma. Preoperative comprehensive evaluation of the affected eye and appropriate technique selection are benefit to the improvement of operation effect and the reduction of complications.