查询词典 refractive error

In this paper, we analyzed the error of film thickness and refractive index caused by the optical control system, and also analysed the allowable error.

通过对光学监控系统引起的薄膜厚度和折射率的误差进行分析。提出膜系的允差分析。尽量减小由于监控设备引起的误差。

In this paper we have point out the error of principle formula quoted by all literatures at home and abroad to measure the refractive angle and the method of V-prism, derive from beginning the right formula of measuring refractive index by the method of minimum deviation angle and the method of V-prism.

本文指出了测量光学材料折射率的最小偏向角法和V棱镜法国内外所有文献的原理公式误差，重新推导了最小偏向角法和V棱镜法测量折射率的正确公式。基于最小偏向角法用精密测角仅可以获得±3×10-6的折射率的测量精度，然而，这些文献沿用经典的测量原理公式却具有-4×10－4数量级的原理公式误差，因此导致错误的测量结果。

In theory, there is no error for the refractive seismic exploration by permuting the focus and the cymoscope. In some especial condition, it would be the only choice because that refractive seismic exploration is needed, but the error can not be neglected be cause of various factors.

在理论上，用源检互换的方法进行折射地震勘探是没有误差的，在某些特殊条件下无法铺设检波器而又必须进行折射地震勘探时它也是唯一的选择，然而，在实际工作中，由于各种因素的影响，其误差是不可忽略的。

This new model eye can simulate the different state of refractive error, and offer the assistance for the teachers to demonstrate retinoscopy to students, which is an effective approach to solve the problem to observe the diverse movement of reflective light from model eye.

这种新型检影模拟眼不但能够模拟各种人眼屈光不正，而且该装置可以提供示教功能，能够提高检影验光学习的效率，使眼视光学检影验光教育培训带来了全新的方法成为可能，为解决检影模拟眼影动观察的示教提供了有效办法。

Postoperative refractive error in group Ⅰ was prominent, and the mean spherical value was 5.12±2.53 D and mean cylindrical value was 3.23±1.55 D.

组患者术后屈光度差异大，平均球镜值(5.12±2.53) D，平均散光度(3.23±1.55) D。

Refractive error and axial length are two main factors that offect the severity of maculopathy. Besides, the histopathogenesis of macular area showed obliteration of choriocapillary and aging factor was suggested to involve in those small vessel obstruction.

近视度数和眼轴长是影响黄斑部病变严重性最主要的两项因素，另外，由黄斑部的组织病理学可看出脤络膜血管的阻塞，而年龄因素被认为是造成小血管阻的主因。

Objective To investigate the dynamic expression of insulin-like growth factor 1 receptor in the posterior retina, refractive error and eye axial length after intravitreous injection of IGF-1R antisense oligonucleotides; to study the role of IGF-1R in the development of form-deprivation myopia in the guinea pig. Methods Sixty-four 3-week-old guinea pigs were included in the study.

目的 观察豚鼠形觉剥夺性近视眼后极部视网膜胰岛素样生长因子1受体(insulin-like growth factor 1 receptor， IGF-1R)基因表达水平的动态变化，以及IGF-1R反义寡核苷酸玻璃体腔注射对形觉剥夺性近视眼屈光度及眼轴长度的影响，探讨视网膜IGF-1R在实验性近视眼发病中的作用。

However, only aging factor (older than 40 y/o), neither increasing of refractive error nor axial elongation, would cause the progression of maculopathy. Thus aging cause the ischemia of choroids may be a major mechanism in myopic maculopathy.

光是年龄老化因素即可造成黄斑部病变之进行，所以脤络膜之缺血可能是造成黄斑部病变的主要机转。

RESULTS: The mean refractive error of the affected eyes was -8.25 diopters (D; range,-2 to -15 D).

结果：受累眼的平均屈光不正为-8.25D（度；范围为-2至-15D）。

Methods Four hundred and eighty-four (968 eyes) myopes were treated with laser in situ keratomileusis in the Qinghai Red Cross Hospital from May 2005 to March 2007. The predictability of visual acuity and refractive error postoperative were analyzed.

收集2005年5月～2007年3月在地处高原地区的青海红十字医院完成准分子激光角膜磨镶术(laser in situ keratomileusis， LASIK)的患者484例（968眼）。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。