A mathematical model of the corneal anterior surface of emmetropic children and an evaluation of asphericity 正视儿童角膜前表面数学模型的建立及非球面的评价
Objective To study the variable changes of axial length, corneal radius and their relationship in emmetropic and early-stage myopic children. 目的探讨青春期前儿童的正视眼与初期单纯性近视眼之间,眼轴长度、角膜曲率及其相关关系的变化。
Objective: To study the higher order aberrations of emmetropic and ametropic eyes with wavefront aberrometer. 目的:借助波阵面像差仪研究正视眼及屈光不正眼的高阶像差。
Methods: Forty of cases 77 emmetropic and ametropic eyes were measured with an aberrometer based on Tscherning's principle with the pupils dilated. The Zernike coefficients and root mean square values of wavefront aberrations up to the 6th order were recorded and statistically analyzed. 方法:40人77只正视眼及屈光不正眼,散瞳后用基于Tscherning原理的波阵面像差仪进行测量,记录高达6阶的波阵面像差Zernike系数和均方根值,并进行统计学分析。
Conclusions The similarity of AC/ A ratios measured with Eye tracker between emmetropic group and late-onset myopic group shows that AC/ A ratio is not the main parameter that can differentiate these two groups. 结论眼动追踪仪测量的AC/A在正视组和迟发性近视组之间无显著性差异,AC/A不是体现两者差异的参数。
Relationship between the prognosis of retinal detachment in emmetropic eyes and vitreous changes 正视眼视网膜脱离的手术预后与玻璃体病变关系的分析
ObjectiveTo evaluate the safety, efficacy and predictability of conductive keratoplasty ( CK) for correct of presbyopic symptoms in emmetropic and hyperopic eyes. 目的评价传导性角膜成型术(CK)治疗老视眼的有效性、安全性、预测性。
Objective: The objective of the study was to compare the accommodative hysteresis of emmetropic and myopic children and to evaluate the relationship between accommodative hysteresis and early-onset myopia. 目的:观察并评价调节滞后与儿童近视关系,探讨儿童近视发病机理。
The emmetropic eyeball of adult man basically appeared circular. 成年男性正视眼基本呈圆形。
Participants 40 young subjects were divided into emmetropic group ( 17 cases) and late-onset myopic group ( 23 cases) according to results of survey and subjective refraction. 研究对象选取40例年轻受试者,根据问卷调查和验光结果分为正视组(17例)和迟发性近视组(23例)。
Objective: To measure the anteroposterior dimensions and horizontal dimensions of emmetropic eyes of adult men in vivo. 目的:活体测量成年男性正视眼的前后径与横径。