角膜前的

This paper reported a new method using tangential curvature to establish a mathematical model of the anterior cornea and an analysis of the regularity of the distribution of the asphericity Q. The curvature in the horizontal meridians is a prolate ellipse. The curvature in the vertical meridians is an oblate ellipse. The curvature of the horizontal meridians is important for anterior corneal asphericity.

本研究分析了运用正切曲率半径值建立人眼前表面角膜数学模型的科学性，显示角膜前表面水平子午线方向非球面性趋向于长椭圆，垂直子午线方向非球面性趋向于扁椭圆，说明人眼角膜的非球面性特性主要由水平子午线实现。

Abnormal expression of type Ⅰ～Ⅵ could be found in the onset of illness. The decreasing of collagen could causes the weaken of the stability of stroma lamellar and the cornea shap to conus. The onset of keratoconus is related to collagen

胶原Ⅰ～Ⅵ型的表达在圆锥角膜的发病过程中有明显的变化，胶原成分的减少会导致角膜的机械抵抗力减弱，并使角膜前凸变薄，最终影响角膜的正常形态，圆锥角膜的发病与胶原密切相关。

The axial length, refraction power of cornea（K1 and K2）and anterior chamber depthwere determined by optic coherence biometryafter cycloplegia.

3 12岁近视儿童79例140眼经门诊睫状肌麻痹后检影验光，采用光学相干生物测量仪测量其眼轴长度、角膜屈光力（K1、K2）、前房深度，计算眼轴长度与角膜曲率的比值AL/CR，对测量值进行统计分析。

Results The tiopronin in situ gel of 0.2 % sodium hyaluronate had proper gelating temperature and certain sustained releasing ability, Papp and retention time of which was 15.43 cm·s-1 and 130 min respectively, irritancy and stability were up to standard of ophthalmic preparation.

结果 含有质量分数0.2 %透明质酸钠的硫普罗宁原位凝胶具有适宜的胶凝温度和一定的缓释作用，其角膜表观透过系数为15.43 cm·s-1，角膜前滞留时间为130 min；刺激性、稳定性符合眼用制剂要求。

In the process of keratoconus, corneal mechanical resistance reduces. The function ofβig-h3 is going to be found out.

在圆锥角膜病变的发生过程中，角膜的机械抵抗力逐渐降低，角膜变薄前凸，βig-h3在发病机制中所起的作用有待于进一步探讨。

Distributions of corneal curvature With the formula 〓 Sin〓αwhich is about the curvatures of oblique meridians on toric surface, the theoretical values of anterior, posterior and total corneal radius of curvature of the oblique meridians were obtained.

3角膜曲率分布根据托力克面斜轴子午线曲率F'计算公式〓，确定角膜前、后表面斜轴子午线曲率及斜轴子午线总角膜曲率的理论值，并通过分析该理论值与实测值之间的一致性，明确角膜曲率分布特征。

Objective: To determine a accurate method to measure ocular axial length,anterior chamber depth lens thickness and keratometry by calculating degrees of intraocular lens demand.

目的：通过对人眼球轴长、前房深度、晶体厚度和角膜曲率的测定，探讨它们之间的相关性，并把握如何精确测定眼球轴长、角膜曲率来保证人工晶体的正确计算。

Methods The central corneal thickness of 637 patients (1210 eyes) of myopia was measured with DGH-4000 pachymeter before and 1、3 month after LASIK.

应用 DGH- 40 0 0型超声角膜测厚仪分别测量6 37例(12 10只眼)近视患者在施行 L ASIK手术前及术后 1月、3月的角膜中央厚度；根据术前的屈光度分为 4组，对各组所测得角膜中央厚度的数值进行分析。

The animal model of rabbit bullous keratopathy was established by anterior chamber injection with 0.05% benzalkonium bromide. The corneal thickness and corneal endothelial cell density were measured with ultrasonic corneal pachymeter and non-contact specular microscope separately before the animal models was established.

二、以0.05%的新洁尔灭溶液前房注射制作兔眼大泡性角膜病变的动物模型，制模前分别用角膜测厚仪和角膜内皮显微镜测量角膜厚度和角膜内皮细胞数目。

Surgical excision can significantly improve induced abnormal corneal topographic changes and reduce corneal astigmatism from pterygia.

翼状胬肉切除术能明显减少角膜散光，改善术前角膜地形图的不规则形态，有利于提高视力和视觉质量。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了