屈光度

目的：研究近视眼患者的角膜偏心率（e值）及其与屈光度、角膜曲率、角膜散光之间的相互关联。

AIM : To investigate corneal eccentricity ( e value ) and its correlation with diopter , corneal curvature and corneal astigmatism .

主要指标屈光度，高阶像差均方根（RMS）值。

Main Outcome Measure Diopter , RMS value of HOA .

基于CCD客观式屈光度仪的研究

A Study on Objective Refractometer Based on CCD

瞳孔直径与年龄及屈光度的相关性分析结果表明，瞳孔直径与年龄成负相关（P0.05），与屈光度无相关性（P0.05）。

The pupil diameter had negative correlation with age while no correlation with myopic diopter .

屈光度的大小不影响LASIK术后干眼的发病率。

Refraction does not affect the incidence of dry eye after LASIK .

彩色眼底像PS表现3种形态，B超下表现4种形态：PS形态与屈光度大小及眼轴长度有关。

There were 3 kinds of patterns in color fundus photography , 2 kinds of appearance in B scan .

LASIK术中两种掀瓣法对术后屈光度的影响

Effect of two different flap lifting methods for the refractive diopter in LASIK

记录并对比分析术后数值和3￣5a随访测量的眼轴长度，角膜曲率，屈光度的变化情况。

The changes of axial length and corneal curvature were analyzed .

图像处理在MDT测量镜片屈光度中的应用

Application of Digital Image Processing in Measurement of Lenses ' Power Using MDT

方法：观察随访了1年的OK镜治疗者43例83眼，根据近视屈光度分为2组，Ⅰ组（<50D）22例46眼；

Methods : 83 eyes of 43 patients who had worn orthokeratology lenses for 1 year were divided into two groups according to their diopters of myopia .

方法对270例（525只眼）近视青少年验配OK镜，对其裸眼视力和屈光度改变进行4a的临床观察。

Methods A four-year clinical observation was carried on 270 myopia adolescents ( 525 eyes ) whose eyesight were corrected by OK .

方法对1000只眼LASIK术前与术后的视力、屈光度进行比较、分析、随访。

Methods To compare , analyze and follow up the vision and diopter of 1000 eyes before and after LASIK .

6.0mm瞳孔下，同一眼内3~5阶像差的RMS值呈递减趋势。在低度和中度近视患者中，各高阶像差和屈光度无明显相关性；

The RMS values were decreased from 3rd to 5th order aberrations with pupil diameters of 6.0 mm in the same eye .

目的：研究激光角膜原位磨镶术（LASIK）前后，角膜后表面屈光度及曲率半径的改变以及影响因素。

Objective : To investigate the changes in the posterior corneal surface topography after LASIK and the factors that influence the results .

方法分析分别使用地塞米松、爱氟龙和拂炎的3组PRK术后病人，在术后3月内视力、屈光度、眼压及角膜混浊情况并进行统计学处理。

The visual acuity , refraction , intraocular pressure and haze were analyzed in three months after PRK .

设计特定的透镜系统，用CMOS图像传感器将此光学图像采集，就得到了可用于计算屈光度的数字图像信号。

Secondly , a lens system is designed to assist CMOS image sensor to capture the optical image and get digital image signal which can be processed to calculate eyes ' diopter .

结论：轴性MA，屈光度差越大，%SD较BA增大越明显，屈光性MA，%SD明显小于BA。

Conclusion : The axial MA : the larger the BDD , the greater of % SD than that of BA . The refractive MA : % SD is smaller than BA .

记录术前、术后的屈光度和最佳矫正视力（BCVA）。

Pre-and postoperative refraction and best corrected visual acuity ( BCVA ) were registered .

VIP在FDM豚鼠视网膜的表达随形觉剥夺时间的延长而增加，与屈光度和眼轴长度的变化一致。

The expression of VIP in the retina of FDM guinea pigs also increases as MD prolonged , concordant with the change of diopter and eyeball axis .

术后近视屈光度均在±100D以内。

Myopic refraction of all patients was within ± 1.00D .

结论日戴RGP，经过角膜被平化作用，青少年近视屈光度加深可受到抑制和控制。

Conclusions Through the effect of corneal flattened , Teenager myopia can be control and suppressed by wearing RGP daily .

SCI的屈光度改变有逐渐由陡峭变扁平的趋势，其直径在术后3个月前有逐渐缩小的趋势，但以后的改变趋于稳定。

The refraction of steep central islands tend to be flat , and its diameter seemed to reduce gradually in the first 3 months postoperation , and than the diameter tend to be stable .

在诊断早期圆锥角膜中，后表面屈光度最大值、后表面高度最大值的ROC曲线下面积最大。

The area under ROC of posterior maximum refractive power and the AUR of posterior maximum elevation were greater than that of other indices in the diagnosis of early keratoconus .

OB读数观测镜视场达到了24°，屈光度为+3°～-4°，水平调整和垂直调整均为180°；

The field of view of OB reading observation mirror reaches 24 °, its diopter is + 3 °~ - 4 °, and both horizontal and vertical adjustments are 180 °;

角膜表面规则性指数（SRI）与角膜表面非对称性指数（SAI）呈正相关，而且近视眼的散光度与其屈光度、SAI呈正相关。

The surface regularity index ( SRI ) was positively correlated with surface asymmetry index ( SAI ), and the astigmatism was positively correlated with dioptre and SAI in myopia .

方法按屈光不正度数共分3组，组71只眼，屈光度-1.00～3.00D；

Method According to the diopter , the cases were divided into 3 group .

目的分析LASIK手术对高阶像差的影响，分析LASIK术前近视屈光度与LASIK术后眼的高阶像差的关系。

Objective To investigate the influence of LASIK surgery on the higher-order aberrations for myopia and analyze the relationship between the higher-order aberrations after LASIK surgery and the myopic diopters before LASIK surgery .

屈光度大于-12.00D透明晶状体超声乳化术的临床研究

Transparent lens phacoemulsification with diopter larger than -12.00D

方法通过海德堡视网膜断层扫描仪II型（HRT-II）获得65例患者96眼的视盘地形图测量，将96眼根据屈光度分为3组，每组32眼，低度近视≤-3.00D；

Methods Topographic measurements for optic disc using Heidelberg retina tomography-II ( HRT-II ) were performed on 96 eyes of 65 patients with myopia .

术后角膜内皮细胞数量变化3组无明显差异（P0.05）。结论：小切口非超声乳化白内障手术中，在角膜最大屈光度径线上的巩膜隧道切口可以在一定程度上矫正术前散光。

Postoperative corneal endothelial cells quantity change showed no significant difference between the three groups ( P 0.05 ) Conclusions : The straight scleral tunnel incision at the maximum curvature meridian can correct preoperative astigmatism in a certain extent during small incision non-phacoemulsification surgery .