Fish eyes have ultraviolet receptors and a more spherical lens than humans.

鱼的眼睛有紫外线感受器和比人类更圆的体。

The lens is very elastic - it can change shape easily.

体很有弹性，它可以很容易地改变形。

First are multifocal, soft contacts, and glasses.

首先是植入多焦点人工体、佩戴软隐形眼镜和眼镜。

Lens on the front to focus light onto a retina in the back.

前面的体将光线聚焦到后面的视网膜上。

So Neilsen and colleagues used a new technique based on the lens of the eye.

所以尼尔森和同事采用了一项以眼睛体为基础的新技术。

He then replaces them with a synthetic lens he manufactures himself.

取而代之的是他自己制造的人工合体。

Not just the lens in front but the retina in back too.

不止可以拍到体还可以拍到视网膜。

Light comes in through the cornea and pupil and hits the lens — the convex, transparent disc that focuses that light and projects it onto the retina, which makes up the inner layer of the back of the eyeball.

光线通过角膜和瞳孔进入并到达体——凸起的透明圆盘，将光线聚焦并投射到视网膜上，视网膜构眼背面的内层。

But a unique thing about hyperopia is that if these patients increase the power of their lens by contraction of certain intraocular muscles, they can focus the image accurately on their retina.

但远视的一个独特之处在于，如果这些患者通过收缩某些眼内肌肉来增体的放大率，他们就可以将图像准确地聚焦到视网膜上。

As for diagnosis, a person is diagnosed with Marfan syndrome if they have clinical features of Marfan syndrome like aortic disease, a dislocated lens, family history, and FBN1 mutations.

在诊断方面，要确诊马方综合征可通过以下方法：患者有明显的马方综合征临床特征，比如主动脉疾病、体脱垂、家族史以及FBN1基因突变。

Age-related cataracts manifest as yellowing and darkening of the lens, and have a major effect on color perception as well as visual sharpness.

年龄相关性白内障表现为体变黄和变暗，对色觉和视觉清晰度有重要影响。

Similarly, the lenses of our eyes have subtle structural imperfections called suture lines where the fibers that make up the lens meet.

我们的眼睛体也相似地有一种微妙的结构缺陷——缝合线，它是构体的纤维的连接处。

So we could just play with the lens and change the trajectory in order to have all the light in focus.

所以，我们只需要从体入手，来改变光的传播路径，就可以让使用滴眼剂的人视线得以聚焦。

These can get into the eyes and lead to cataracts - a condition that causes the eye lens to become cloudy.

这些物质会进入眼睛并导致白内障—一种使眼体混浊的疾病。

Most mammal eyes have a structure called a lens—a transparent, convex structure whose shape refracts light to enable sight.

多数哺乳动物的眼睛都有一种体结构——一种透明、凸起的结构，可折射光线像。

It's an artificial lens but is really well tolerated, it's biocompatible, and can help to restore vision.

这是一种人工体，但耐受性很好，它是生物相容性的，可以帮助恢复视力。

Then, they put in a clear, plastic lens.

然后，他们放入一个透明的塑料体。

In humans, this lens is curved to process light waves traveling through air.

人类的体是弧形的，可以处理穿过空气的光波。

Positional; anterior displacement of lens E. G. after trauma.

位置；例如外伤后体前移。

The farther away an object is, the angles between the light rays entering our eyes are smaller, and our lens doesn't need to bend them as much, so tiny muscles relax and flatten it.

物体离我们越远，照进眼睛的光线之间的夹角越小，体不需要弯曲那么多，因此微小的肌肉放松，拉平水体。