In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals.

近年来，光纤网络已经取代了传输电信信号的电线。

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It gradually destroys the rods and cones that detect light in the retina of the eye. But it does not harm the optic nerve, which transmits electrical impulses from the retina to the brain.

这种病会逐渐破坏视网膜可以感光的视杆和视锥，但是不会损害视觉神经，视觉神经负责将视网膜神经脉冲传递到大脑。

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But it does not harm the optic nerve, which transmits electrical impulses from the retina to the brain.

而视觉神经是从视网膜传送电脉冲到大脑的神经，这种疾病其对视觉神经并没有危害。

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Transfer data packets from long-haul fiber-optic networks to the electrical power grid and shoot the data (alongside electricity) straight into people's homes.

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Optical technologies have revolutionized long-distance communications, replacing low-capacity copper wiring that carries electrical signals with combinations of lasers and fiber-optic cabling that send information over many high-speed channels.

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The artificial retina is composed by neuronal photoreceptors, called cones and rods, which capture light signals and transform them in electrical signals, transferring them to the retinal ganglion cells and, through the optic nerve, to the brain.

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