refractive

Refractive index is the essential parameter of tissular optical characteristics.

光在生物组织中的传输行为与组织的光学特性有关。

Efficacy measures include axial length， keratometric power and mean absolute refractive error.

有效测量值包眼轴长度，角膜曲率和绝对屈光误差值等内容。

The visual acuity (VA). refractive power, keratometer were recorded 1 day before and 1 day.

结果100％病治疗后视力高,但停止治疗后短时间内视力、近视度就回退到治疗前水平。

In this thesis, the plane wave expansion method is used to get the equifrequency surface.The anomalous refractive properties of photonic crystal are analyzed by using the equifrequency surface.

中文摘要光子晶体是由周期性结构所组成的结构，假若经由适度的设计则具备改变光波传递的效果。

Incorporating array of metallic wires into the host media, such as ferrimagnet YIG under an external magnetic bias field, is a novel method to synthesize negative refractive index (NRI) material.

摘要以亚铁磁煤质-YIG为基体，在其中嵌入金属导体线阵列是人工合成负折射率微波媒质的一种新方法。

Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared.

由此可知利用材料在剩余射线带内折射率小于1的特性，我们可以制备出中红外区和远红外区存在禁带的光子晶体。

2 T he convers ion from negative lens effect topos itive lens effect in non linear refraction.(a)T he change of non linear refractive index onax is w ith z;

标题： 图2非线性折射负透镜效应向正透镜效应的转化.(a)样品光轴位置非线性折射率随z的变化;(b)归一化的z扫描曲线 F ig.