Shrestha U D, Shrestha M K
Tilganga Institute of Ophthalmology, Gaushala, Kathmandu, Nepal.
Nepal Med Coll J. 2009 Sep;11(3):203-4.
Pre-operative keratometry measurement of the subjects was done in 80 children with bilateral congenital cataract below 15 years who had undergone pediatric cataract surgery. The objective of the study was to evaluate the average keratometry reading in Nepalese children with bilateral cataract. The keratometry reading was taken under general anesthesia with the Nidek Auto Keratometer, model KM-500. The mean age was 69.7 months (SD = 52.6), range from one month to 168 months. The mean keratometry reading was 44.8 (SD = 2.7) in operated eyes and 44.7 (SD = 2.6) in fellow eyes. The minimum and the maximum values of keratometry reading in operated eyes were 39.4 and 51.5 respectively where as it was 40.3 and 51.5 in fellow eyes. We concluded that in bilateral pediatric cataract the keratometry value is similar in both operated and fellow eyes. Based on the keratometry value of the operated eye, the patients with bilateral congenital cataract can undergo surgery in those eye hospitals where facilities of the keratometry is not available under general anesthesia. We also recommended that additional study on axial length will be needed to calculate the Intra Ocular Lens power in fellow eye.
对80名15岁以下接受小儿白内障手术的双侧先天性白内障患儿进行了术前角膜曲率测量。本研究的目的是评估尼泊尔双侧白内障患儿的平均角膜曲率读数。使用Nidek自动角膜曲率计KM - 500型号在全身麻醉下进行角膜曲率读数测量。平均年龄为69.7个月（标准差 = 52.6），范围从1个月至168个月。手术眼的平均角膜曲率读数为44.8（标准差 = 2.7），对侧眼为44.7（标准差 = 2.6）。手术眼角膜曲率读数的最小值和最大值分别为39.4和51.5，而对侧眼为40.3和51.5。我们得出结论，在双侧小儿白内障中，手术眼和对侧眼的角膜曲率值相似。基于手术眼的角膜曲率值，双侧先天性白内障患者可在那些没有角膜曲率测量设备但能进行全身麻醉的眼科医院接受手术。我们还建议，需要对眼轴长度进行进一步研究，以计算对侧眼的人工晶状体度数。
