角膜线形瘢痕与角膜散光之间相关性的一元方程分析  

The simple equation of linear regression analysis of the relation between traumatic corneal scar and astigmatism

作　　者：温成林[1] 贾俊红[1] 

机构地区：[1]三门峡市中心医院眼科,河南三门峡472000

出　　处：《眼外伤职业眼病杂志》2009年第6期427-430,共4页Journal of Injuries and Occupational Diseases of the Eye with Ophthalmic Surgeries

摘　　要：目的探讨角膜穿孔伤后角膜散光的性质及程度与伤口部位及瘢痕长度之间的相关性,并列出其相关的一元线性方程式。方法测量线形角膜伤口的长度,并用O rbscavⅡ、角膜曲率计及检影验光法检测伤口愈合并拆除缝线3个月后的散光度,分析瘢痕类型、长度和部位与散光性质及散光度之间的关系。对30只角膜中周部位的线形角膜瘢痕的患眼进行统计学处理,应用线性回归方程进行分析,列出瘢痕长度与散光度之间的一元线性回归方程式。结果角膜中周部位的线形瘢痕散光的性质与瘢痕长轴与角膜缘切线的关系有关,散光度与长度之间存在线性关系,两者间线性回归方程为:Y=1.703+0.478X。结论外伤性角膜瘢痕与散光的类型有一定的关系,其瘢痕长度与散光度呈正相关。Objective To explore the relationship and regularity between traumatic corneal scars and astimagtism, and lists its simple equation of linear regression. Methods 30 cases（30 eyes） of suffering from corneal penetrating injury which consist with screening standard were collected in the study. （ excepting the cases with irregular scars, the cases whose scars are in the central region, timbal zone of cornea and the cases with other diseases and operations in eyes ）. 30 cases （30eyes） accepted examinations of corneal topography, computered and skiascopic optometry （for those 〈 35 yrs old applying for cycloplegia） and took photographs under slit lamp microscope. The following items were precisely surveied ： the shape, length and location of corneal scars, the astigmatism degree and axial direction. In order to explore the relationships between the length of corneal scars and the power of corneal astigmatism, the datas were entered into the table and analyzed statistically them with linear regression equation, then the relatioinships were analyzed, which of the corneal scars of different shapes, length and location and the type of astigmatism and the degree of astigmatism. Results The correlation coefficient between the length of corneal scars and the degree of astigmatism is 0.563 （ P〈0.01 ） ,which identified that there is correlation between the scars length and astigmatism. The regression equation is the following： Y=1.703 ＋0.478X. the result of correlation test is the fowllowing： F=13.023, P =0.001 ,which identified the relationship of them is positive correlation. The relations of the shape, length, and location of corneal scars and the type of astigmatism and the degree of astigmatism are the following ：（1）the scars parallelling to the corneal timbus resulted in myopic astigmastism as the suture made the meridian perpendicular to the scar steep （2） the scars perpendicular to the corneal limbus resulted in hyperrnetropic astigmastism as the suture made the meridian perpendi

关 键 词：角膜瘢痕 角膜散光 相关性 一元线性回归方程 

分 类 号：R779.1[医药卫生—眼科]