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A doctor revealed that he can permanently change a person's eye color in just 20 seconds, the Daily Mail reported.

Dr. Gregg Homer, from Stroma Medical in California said his Lumineyes technology uses a laser tuned to a specific frequency to turn brown eyes to blue.

The laser energy removes the brown pigment, or melanin, from the top layer of the iris, and the blue eye color emerges over the following two to three weeks.

However, the procedure is irreversible because the brown tissue cannot regenerate.

（点击英国《每日邮报》查看原文）

激光可为眼睛染色

       据英国《每日邮报》报道，有位医生自称能在20秒内永远改变一个人眼睛的颜色。

       来自加州基质医疗机构的格雷格•霍姆博士表示，为眼睛染色是利用特定频率的激光将棕色变为蓝色。

       激光可以去除虹膜表面的棕色素，或者说是黑色素；两三周后，蓝色瞳孔会逐渐出现。

       不过，这一过程没法逆转，因为棕色组织已无法再生。

(China.org.cn November 4, 2011)