两种LASIK微型角膜刀的临床应用探讨

Clinical application study of two kinds microkeratomes for LASIK

目的 比较ＫＮ－ ５０００ 型微型角膜刀与Ｍｏｒｉａ 微型角膜刀在ＬＡＳＩＫ 术中制作角膜瓣时的优缺点。方法 选用连续病例５６ 例１０３ 眼，随机分ＫＮ 组和Ｍｏｒｉａ 组，ＫＮ 组２８ 例５３眼，术前近视度数平均为－ ９－２１±７－４１Ｄ，散光≤－５－００Ｄ，Ｍｏｒｉａ 组２８ 人５０ 眼，术前近视度数平均为－１０－４７±３－７３Ｄ，散光≤－２－５０Ｄ，术中分别用ＫＮ－５０００ 微型角膜刀和Ｍｏｒｉａ 微型角膜刀制作角膜瓣。结果 两组病例角膜瓣边缘整齐。基质面：ＫＮ组全部术眼光滑、规则，Ｍｏｒｉａ 组部分术眼有“搓衣板”现象。瓣异常：ＫＮ组游离瓣２ 眼，Ｍｏｒｉａ 组不全瓣５ 眼。ＫＮ组角膜瓣质量优于Ｍｏｒｉａ 组，瓣异常率低于Ｍｏｒｉａ 组。结论 ＫＮ－ ５０００ 微型角膜刀在ＬＡＳＩＫ术中制瓣时性能及安全性、稳定性优于Ｍｏｒｉａ 组微型角膜刀。ＫＮ－ ５０００ 微型角膜刀还具有良好的易学性和进行ＬＡＳＩＫ角膜板层移植的功能。

Objective To compare the advantage and defect of KN-5000 microkeratome with Moria microkeratome for flap making in LASIK Methods The continuous 103 eyes in 56 cases were randomly divided into two groups,the KN-5000 group and Moria group,the average pre-operated myopic degree of the 53 eyes of 28 cases in KN-5000 group was -9.21±7.41D,astigmatism≤-5.00DC wherease the average preoprated myopia of 50 eyes of 28 cases in Moria group was-10.47±3.73D and astigmatism≤-250D respectively.The flaps of these two groups were made respectively by using KN-5000 microkeratome and Moria microkeratome in LASIK.Results The edges of the flaps of two groups were neat;The stroma surface of every post-operated eye in KN-5000 group was smooth and neat wherease the stroma surface of some Moria cases showed 'washboard'abnormal flap;there were 2 free caps in KN-5000 group wherease there were 5 incomplete flaps in Moria group.The guality of the flap in KN-5000 group was better than that of moria group,the rate of abrormality of flaps was lower than that in Moria group.Conclusions The property,safety and stableness of KN-5000 microkeratome are superior to those of Moria microkeratome for flap making in LASIK. It is easy to learn how to use KN-5000 microkeratome,further more,KN-5000 microkeratome can be used for cornea lamella graft in LASIK.