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目的利用手动角膜曲率计对白内障术前患者角膜散光的存在情况进行观察,为临床手术提供帮助与参考。方法利用德国RODENSTOCK公司生产的KER 200型手动角膜曲率计测量635例(886眼)白内障患者术前角膜散光情况。结果 886眼中,≤0.50 d者347眼占39.16%,>0.50～1.0 d者184眼占20.77%,>1.0～2.0 d者261眼占29.46%,>2.0～3.0 d者40眼占4.51%,>3.0 d者25眼占2.82%,不规则散光29眼占3.27%。结论白内障术前患者大部分存在不同程度的角膜散光,为保证手术效果,提高术后脱镜率,应在手术设计、晶体选择及手术操作中注意患者角膜散光的情况,并尽可能减少术源性散光,使患者的高质量的视觉要求得到更好的满足。
Objective To observe the existence of corneal astigmatism before operation in patients with cataract using manual corneal curvature meter, and to provide help and reference for clinical operation. Methods Preoperative corneal astigmatism was measured in 635 cases (886 eyes) of cataract patients with the KER 200 manual keratometer manufactured by RODENSTOCK Company in Germany. Results In 886 eyes, 347 eyes were 39.16% ≤0.50 d, 184 eyes were 20.77%> 0.50 ~ 1.0 d, 29.46% were> 1.0 ~ 2.0 d, 4.5 eyes were> 40 eyes with> 2.0-3.0 d, 25 cases of> 3.0 d accounted for 2.82%, 29 cases of irregular astigmatism accounted for 3.27%. Conclusion Most patients with preoperative cataract have different degree of corneal astigmatism. In order to ensure the operative effect and improve the rate of postoperative conjunctival removal, we should pay attention to the situation of corneal astigmatism in surgical design, crystal selection and operation, and minimize the source of operation Astigmatism, the patient’s high-quality visual requirements are better satisfied.