散光

Myopic 225°,astigmatic 50°,astigmatic axis at 80°,vision 1.0

左眼：—2.25/—0.50x80，即近视225度，散光50度，散光的轴位为80度方向，视力为1.0

Myopic 275°,astigmatic 50°,astigmatic axis at 180°,vision 1.0

左眼：—2.75/—0.50x180，即近视275度，散光50度，散光轴位为180度方向，视力1.0

These findings are relevant to the mechanisms of astigmatism changes.

这些散光度数或轴度的变化和可能的散光变化机转有密切的关连。

The results of corneal topography, that of keratometer and cycloplegic retinoscopy in measuring astigmatism before refractive surgery were compared, and the measuring results of corneal topography and that of keratometer for 72 eyes after photorefractive keratectomy and 95 eyes after laser in situ keratomileusis were also compared.

采用计算机辅助的角膜地形图、角膜曲率计及散瞳验光三种测量散光的方法，对屈光不正患者360只眼进行检查，同时对准分子激光角膜切削术（photorefractive keratectomy，PRK）后72只眼和准分子激光原位角膜磨镶术（excimer laser in situ keratomileusis，LASIK）后95只眼的角膜散光用角膜地形图和角膜曲率计进行测量并比较。

AIM: To evaluate the effect of wearing cylindrical lens on dry eyes.

目的：观察长期配戴散光镜对散光的干眼患者的治疗作用。

It was found that, for most subjects in the group, astigmatism changed in the with-the-rule direction, the mean change being -0.036 DC at axis 176 deg for each dioptre of accommodation response.

研究发现，多数病例都发生了循规性散光的改变，每矫正1个屈光度，循规性散光平均改变-0.036DC 。

At first the frequency spectrum of diffraction light is sampled so as to make holographic grating diffraction discrete in space frequency, namely, in the grating code is included discrete frequency spectrum, which satisfies requirements of human vision.

首先对衍射光的频谱进行采样，使全息光栅衍射的是空间频率不连续的离散光，即在光栅的编码中只包含离散光频谱，且满足人眼视觉要求。

2According to requirement of suppressing stray light in two-mirror system, vertex coordinate formulas of inner baffle are deduced based on geometrograph in the case of certain obscuration, viewing field and vignetting. In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one. Outer baffle is designed when angle of stray light suppressing is foregone and the vanes are designed in C-language program. Finally, the same-height vanes in drawtube between primary and secondary mirrors are designed for further suppressing the stray light in two-mirror system.

给出双反射系统杂散光消除设计的具体要求，结合作图法，推导出考虑视场大小及初始中心遮光比确定时，主次镜内遮光罩顶点坐标公式；讨论考虑渐晕时主次镜内遮光罩的设计；为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；设计在杂散光源抑制角已知时的外遮光罩，并利用C语言实现程序化设计其挡光环的方法；设计主、次镜间镜筒内壁上等高挡光环，进一步抑制双反射系统的杂散光。

Combinations of myopia and astigmatism or hyperopia and astigmatism are common.

组合的近视及散光或远视和散光是常见的。

A light-radiating body. It is a milk-white opaque used to diffuse LED light. The height and width of opaque is prepared. The mentioned opaque is set over multiple LED bulbs, and its length accords with that of core

一散光体，为用于扩散LED光线的乳白色不透明体，该不透明体为预定高度和预定宽度的，所述的散光体设置在多个LED灯泡上方，其长度与芯线的长度相等； www.en-ch.com

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。