这项由虹彩扫描公司开发的新技术，利用到一项事实：每个人眼球的虹膜独一无二，而且终其一生都不会改变。
Developed by IriScan, this new technology takes advantage of the fact that the iris of each person's eye is unique, and remains unchanged throughout a lifetime.
激光能去除眼球虹膜最外层的棕色素或黑色素，而蓝眼珠会在两到三周之后显现。
The laser energy removes the brown pigment, or melanin, from the top layer of the iris, and the blue eye colour emerges over the following two to three weeks.
殡葬员说染料对他的眼球起了种奇怪的作用，把它们彻底变白了，彻底到连虹膜的褐色和瞳孔的黑色都被漂白了。
The undertaker said that the dye had done a strange thing to his eyeballs, turned them white and completely so, so that the brown of his irises and the black of his pupils had been leached away.
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