CAJ | 학술논문

目的：探讨Moria M290一次性微型板层角膜刀制作角膜瓣的可预测性及其影响因素。方法共入选104例（208只眼）拟行准分子激光原位角膜磨镶术（LASIK）患者参加此研究。术中使用Moria M290一次性微型板层角膜刀制作角膜瓣，所有患者均使用全新刀头，先右眼制瓣，然后左眼制瓣。制瓣前及制瓣后均使用超声角膜测厚仪测量术眼中央角膜厚度，同时测量角膜瓣直径及蒂长。结果平均角膜瓣厚度为（113．26±12．12）μm，其中右眼平均角膜瓣厚度为（121．42±12．08）μm，左眼平均角膜瓣厚度为（107．24±12．24）μm，两者比较有显著统计学差异（P ＜0．01）。右眼平均角膜瓣直径（9．46±0．15）mm，平均蒂长（5．16±0．25）mm；左眼平均角膜瓣直径（9．39±0．19）mm，平均蒂长（5．09±0．24）mm，两者比较均无显著性差异（P ＝0．08和P ＝0．95）。角膜瓣厚度与患者年龄，术前屈光度，术前角膜曲率及角膜直径均无明显相关性（分别P ＝0．56，P ＝0．50，P ＝0．19，P ＝0.42），与术前中央角膜厚度呈正相关性（r ＝0．448，P ＜0．01）。结论 Moria M290一次性微型板层角膜刀制作角膜瓣预测性良好，角膜瓣厚度与术前中央角膜厚度呈正相关性。
목적：탐토Moria M290일차성미형판층각막도제작각막판적가예측성급기영향인소。방법공입선104례（208지안）의행준분자격광원위각막마양술（LASIK）환자삼가차연구。술중사용Moria M290일차성미형판층각막도제작각막판，소유환자균사용전신도두，선우안제판，연후좌안제판。제판전급제판후균사용초성각막측후의측량술안중앙각막후도，동시측량각막판직경급체장。결과평균각막판후도위（113．26±12．12）μm，기중우안평균각막판후도위（121．42±12．08）μm，좌안평균각막판후도위（107．24±12．24）μm，량자비교유현저통계학차이（P ＜0．01）。우안평균각막판직경（9．46±0．15）mm，평균체장（5．16±0．25）mm；좌안평균각막판직경（9．39±0．19）mm，평균체장（5．09±0．24）mm，량자비교균무현저성차이（P ＝0．08화P ＝0．95）。각막판후도여환자년령，술전굴광도，술전각막곡솔급각막직경균무명현상관성（분별P ＝0．56，P ＝0．50，P ＝0．19，P ＝0.42），여술전중앙각막후도정정상관성（r ＝0．448，P ＜0．01）。결론 Moria M290일차성미형판층각막도제작각막판예측성량호，각막판후도여술전중앙각막후도정정상관성。
Objective To evaluate the accuracy of corneal flap thickness made with Moria M2 90 disposable mi-crokeratome,and to identify the factors that may affect it. Methods Author reviewed 104 myopic patients (208 eyes) who underwent laser in situ keratomileusis (LASIK)using Moria M2 90 disposable microkeratome. The corneal thickness was measured by ultrasound pachymetry before surgery and after corneal flap cut during surgery. Disposable microkeratomes were used for both eyes. Corneal flap cutting started in the right eye and then in the left eye. Results Mean corneal flap thickness was 113. 26 ± 12. 12 μm. It was 121. 42 ± 12. 08 μm for right eyes and 107. 24 ± 12. 24 μm for left eyes. A sig-nificant different was found between right and left eyes (P < 0. 01). Mean flap diameter was 9. 46 ± 0. 15 mm in right eyes and 9. 39 ± 0. 19 mm in left eyes. Mean hinge lengths in right and left eyes were 5. 16 ± 0. 25 mm and 5. 09 ± 0. 24 mm, respectively. No significant different was found between right and left eyes for flap diameter or hinge length. There was no significant correlation between corneal flap thickness and age,preoperative SE,preoperative keratometry,or preoperative corneal diameter. A significant correlation was found between corneal flap thickness and preoperative central corneal thick-ness (CCT;r = 0. 448,P < 0. 01). Conclusion Corneal flap thickness made with disposable Moria M2 90 microkera-tome was accurate. There was a correlation between corneal flap thickness and preoperative CCT.