Abstract:AIM: To compare the clinical effects of improved phacoemulsification through limbus tunnel incision versus manual small-incision cataract surgery on ophthalmic operation vehicle.
METHODS: Totally 261 patients(261 eyes)were enrolled in non-randomized controlled retrospective study. There were 160 eyes of Group A were treated with improved phacoemulsification through limbus tunnel incision; 101 eyes of Group B were treated with manual small-incision cataract extracapsular extraction. Both of the two groups were implanted PMMA IOL during the surgery and were follow-up for postoperative 30d. The surgical operation time and surgical complications of the two groups were compared. Uncorrected visual acuity(UCVA)and surgery induced astigmatism(SIA)were recorded at postoperative 1, 7 and 30d.
RESULTS:The operation time of improved phacoemulsification through limbus tunnel incision was shorter than that of manual small incision cataract extraction(t=-6.419, P<0.001). UCVA greater than or equal to 0.5 of Group A were 110(68.8%), 115(71.9%)and 121(75.6%)at postoperative 1d, 7d and 30d, and that of Group B were 55(54.5%), 63(62.4%)and 68(67.3%). UCVA of Group A was better at postoperative 1d(χ2=5.441, P=0.020). The differences of UCVA greater than or equal to 0.5 between the two groups were not statistically significant at postoperative 7d and 30d. The overall difference of SIA between the two groups was not statistically significant(F=2.135, P=0.145). The difference of SIA within the two groups was statistically significant(P<0.001)in different point time. The difference in the methods of improved phacoemulsification through limbus tunnel incision and manual small incision cataract extraction was not sifnificant on SIA in different time points(F=1.314, P=0.264). There was no statistically significant difference between the two groups in posterior capsular rupture and corneal edema(P>0.05), but the difference in the anterior chamber reaction between the two groups was statistically significant at postoperative 1d(χ2=5.293, P<0.05).
CONCLUSION: Improved phacoemulsification through limbus tunnel incision has advantages over shorter operation time, better visual recovery, few syndromes and is worth promoting on ophthalmic operation vehicle.
