CAJ | 학술논문

目的比较与评价不同切角巩膜隧道切口对白内障术后角膜散光的影响.方法设定从巩膜反眉状隧道切口的顶点作一条切线,该切线与术前角膜散光轴形成的夹角,称之为切角将131例(135只眼)白内障分为3组,每组45只眼,A组采用0°切角;B组采用45°切角;C组采用90°切角.手术方式均采用小切口无缝线白内障摘除术,巩膜反眉状6mm隧道切口,植入光学部直径为5.5mm的聚甲基丙烯酸甲酯(PMMA)硬性人工晶状体.随访术后1周、1月、3月裸眼视力及角膜散光数值.结果术后3月裸眼视力A、B组与C组间差别有统计学意义(P＜0.01).术后各时间段A组角膜散光度均小于B、C二组,术后1周角膜散光度与术前比较,A组无统计学意义,B、C二组有统计学意义,术后3月角膜散光度与术前比较,A、B组无统计学意义,C组有统计学意义;A、B、C三组在术后3个月平均角膜散光度的变化差异有统计学意义(P＜0.01).结论对于采用小切口无缝线白内障摘除术,根据术前散光轴位选择0°切角,有利于减小术后角膜散光,获得更好的裸眼视力.
목적 비교여평개불동절각공막수도절구대백내장술후각막산광적영향.방법 설정종공막반미상수도절구적정점작일조절선,해절선여술전각막산광축형성적협각,칭지위절각장131례(135지안)백내장분위3조,매조45지안,A조채용0°절각;B조채용45°절각;C조채용90°절각.수술방식균채용소절구무봉선백내장적제술,공막반미상6mm수도절구,식입광학부직경위5.5mm적취갑기병희산갑지(PMMA)경성인공정상체.수방술후1주、1월、3월라안시력급각막산광수치.결과 술후3월라안시력A、B조여C조간차별유통계학의의(P＜0.01).술후각시간단A조각막산광도균소우B、C이조,술후1주각막산광도여술전비교,A조무통계학의의,B、C이조유통계학의의,술후3월각막산광도여술전비교,A、B조무통계학의의,C조유통계학의의;A、B、C삼조재술후3개월평균각막산광도적변화차이유통계학의의(P＜0.01).결론 대우채용소절구무봉선백내장적제술,근거술전산광축위선택0°절각,유리우감소술후각막산광,획득경호적라안시력.
Objective To compare and evaluate the effect of inversed frown shaped scleral tunnel incision cataract extraction with different Cutting Angles on corneal astigmatism. Methods A tangent was made from the vertex of inversed frown shaped scleral incision, the angle formed by the tangent and preoperative corneal astigmatism axis was called Cutting Angle. A total of 131 patients (135 eyes) were divided into three groups, each group contained 45 eyes. Group A performed with 0° Cutting Angle; Group B performed with 45° Cutting Angle; Group C performed with 90° Cutting Angle. All the patients were performed by small sutureless incision cataract extraction through 6mm inversed frown shaped scleral incision and implanted one piece of 5.5mm PMMA intraocular lense (IOL). The visual acuity and corneal astigmatism were measured at postoperative 1 week, 1 month and 3 months. Results At 3 months after surgry, there were statistical significant difference in visual acuity between group A, B and C (P <0.01). Compared postoperative corneal astigmatism at 1 week with that before surgery, there were no significant difference in statistics in group A, but there were statistical significant difference in group B and C. At 3 months after surgery, there were statistical significant difference in the average changes of corneal astigmatism among three groups (P <0.01). Conclusions Better visual acuity and less postoperative astigmatism can be obtained with small sutureless incision cataract extraction when choose 0 ° Cutting Angle.