ObjectiveTo explore the effects and safety of superior temporal quadrant limbal tunnel microincision phacoemulsification combined with intraocular lens implantation for cataract patients after glaucoma trabeculectomy.

MethodsOne hundred and twenty cataract patients treated with glaucoma trabeculectomy were randomly divided into the control group (n=51) and obnservation group (n=51).The observation group and control group were treated with superior temporal quadrant limbal tunnel microincision phacoemulsification combined with intraocular lens implantation and conventional phacoemulsification combined with intraocular lens implantation, respectively.Two groups were followed up for 1 to 6 months after operation, and the degree of corneal astigmatism, best corrected visual acuity, anterior chamber depth, intraocular pressure level and incidence of complications (choroidal detachment, filtering bleb leak, transient increase in intraocular pressure and corneal edema) were analyzed in two groups.

ResultsAfter 1 week, the degree of corneal astigmatism in two groups increased compared before operation, and which in observation group was lower than that in control group (P < 0.01).Compared after 1 week of operation, the degree of corneal astigmatism in two groups decreased after 1 month, 3 months and 6 months of operation, and which in observation group after 1 and 3 months was lower than that in control group (P < 0.01).After 1, 3 and 6 months of operation, the best corrected visual acuity, anterior chamber depth and intraocular pressure level in two groups improved, increased and decreased compared before operation, respectively, and the best corrected visual acuity, anterior chamber depth and intraocular pressure level in obseravtion group were higher, greater and lower than whose in control group, respectively (P < 0.05 to P<0.01).The incidence rate of complications in observation group (7.84%) was lower than that in control group (23.53%)(P < 0.05).

ConclusionsThe superior temporal quadrant limbal tunnel microincision phacoemulsification combined with intraocular lens implantation for cataract patients after glaucoma trabeculectomy can effectively increase the anterior chamber depth, reduce intraocular pressure and improve the best corrected visual acuity of the patients.The degree of surgically induced astigmatism is mild, and the incidence of postoperative complications is low, which is safe.