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晶体。

The lens brings together the rays of light that enter the eye.

晶体将进入眼睛的光线一起。

Light can shine through this lens without any problem.

光线可以毫不费力地穿过这个晶体。

First are multifocal, soft contacts, and glasses.

首先是植入多焦点人工晶体、佩戴软隐形眼镜和眼镜。

In this shape, the lens focuses images behind the retina.

这种形下，晶体焦后面的图像。

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

人类的晶体是弧形的，可以处理穿过空气的光波。

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

前面的晶体将光线焦到后面的上。

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晶体为基础的新技术。

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

位置；例如外伤后晶体前移。

It takes Dr Ruit just half an hour to remove Teteeni's fogged lenses.

鲁特医生只用了半个小时就取出了特缇妮眼中混浊的晶体。

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成晶体。

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

不止可以拍到晶体还可以拍到。

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

晶体很有弹性，它可以很容易地改变形。

The cataract is the clouding of the lens which is on the inside of the eye.

白内障是眼睛内部晶体的混浊。

The lens focuses the image in front of the retina.

晶体会把光线焦到前方。

In a cataract, the clear lens at the front of the eye slowly becomes unclear or cloudy.

白内障会让眼睛前面的透明晶体变得不清楚、模糊。

For example, if an eye lens dislocates, it can be removed and replaced by an artificial lens.

比如，晶体脱垂的患者可以通过晶体摘除及人工晶体置换来治疗。

But over time, the lens may become harder and less clear.

但随着时间的推移，晶体可能会变得更硬，不那么透明。

In this shape, the lens focuses light directly onto the retina and produces a clear image.

这种形下，晶体将光线直接焦到上，并产生清晰的图像。

In this shape, the lens can focus up close images onto the retina.

这种形下，晶体可以将近距离的图像焦到上。