Clinical effect of 2.2 mm corneal microincision cataract phacoemulsification in the treatment of elderly cataract
Objective To investigate the effect of 2.2 mm corneal microincision cataract phacoemulsification in the treatment of elderly cataract and its influence on corneal endothelial function and complication rate.Methods A total of 113 elderly patients with cataract from March 2020 to March 2022 were selected as the study objects,all of whom underwent phacoemulsification.The patients were divided into 2.2 mm group(55 cases)and conventional group(58 cases)according to incision size.Surgical indicators and visual acuity recovery before and after surgery were compared between the two groups.The thickness of the inside and outside corneal incision,corneal endothelial cell function,corneal physiological indicators and tear film function were analyzed and evaluated before and after surgery,and the incidence of postoperative complications of transient intraocular hypertension and corneal edema were calculated.Results The naked eye far visual acuity,LogMAR value for best corrected visual acuity(BCVA)of the control group was lower than that of the conventional group 7 days after operation and corneal astigmatism value at 7 days after operation in 2.2 mm group were lower than those in conventional group(P＜0.05).The corneal thickness at the outer incision 1 and 7 days after surgery and the thickness at the inner incision 1 day after surgery in the 2.2 mm group were lower than those in the conventional group,and the difference was statistically significant(P＜0.05).The density of corneal endothelial cells(CECs)and the proportion of hexagonal cells in the 2.2 mm group were higher than those in the conventional group 7 days after surgery,and the coefficient of variation of CECs was lower than that in the conventional group,with statistical significance(P＜0.05).The corneal resistance factor(CRF)at 7 days after operation in 2.2 mm group was higher than that in conventional group,and the Goldmann-related intraocular pressure(IOPg)and corneal compensation intraocular pressure(IOPcc)were higher than those in conventional group,with statistical significance(P＜0.05).The tear film rupture time(BUT)at 7 days after surgery in 2.2 mm group was longer than that in conventional group,and the basic tear secretion test(ST-Ⅱ)value was lower than that in conventional group,the difference was statistically significant(P＜0.05).The incidence of complications was 1.82%in the 2.2 mm group(1 case of transient iOP)and 3.39%in the conventional group(1 case of transient IOP and 1 case of corneal edema).There was no significant difference in the incidence of complications between the two groups(P＞0.05).Conclusion 2.2 mm corneal microincision cataract phacoemulsification can effectively improve postoperative visual acuity,promote corneal incision healing,and improve corneal endothelial cell function and tear film function in elderly patients with cataract.
senile cataract2.2 mm corneal microincisionphacoemulsification of cataractcorneal endothelial functioncomplication
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