人工晶体植入术后的远期角膜散光

LONG-TERM EXISTING CORNEAL ASTIGMATISM FOLLOWING POSTERIOR CHAMBER INTRAOCULAR LENS IMPLANTATION

本文在白内障囊外摘除术联合后房型人工晶体植入术后二年的74眼中,用角膜计和显然验光检查,发现63只眼(85.14%)的角膜散光≥0.50D,平均角膜散光度为1.78±1.41D,以循规性散光占优势(77.03%);结果分析显示:10—0尼龙缝线缝合切口所引起的角膜散光,即使术后二年,散光不会自行完全消退。持续存在的角膜散光可影响工人晶体植入术后远期裸眼视力,矫正散光所需的柱镜度数与角膜散光的度数很接近。本文说明了控制人工晶体植入术后角膜散光必要性,并提出行之有效的方法。

Seventy-four eyes underwent extracapsular cataract extraction with posterior chamber intraocular lens implantation for two years were followed up. The examination by keratometer and manifest refraction revealed 85.14% of the eyes(63eyes) existing≥0. 5Diopter(D) corneal astigmatism with average 1.78±1.41 D, predominantly with-the-rule(77.03%). The results demonstrated that corneal astigmatism induced by 10-0 monofilament nylon suture was not absent completely even 2 years later postoperatively, persistent corneal astigmatism could affect ultimate uncorrected visual acuity and spectacle cylinder was almost equal to the corneal astigmatism. It was suggested that some proper measures to control corneal astigmatism following posterior chamber intraocula lens implantation must be considered.