How are the Q-switched Nd:YAG lasers used?

The Q-switched Nd:YAG lasers are primarily used to remove tattoos. The 1064-nm laser effectively removes black, blue-black, and blue tattoo pigment. This laser has also been useful in treating dermal pigmented lesions such as nevus of Ota and nevus of Ito. The 532-nm laser effectively removes red tattoo pigment. The 532 Q-switched Nd:YAG laser is also used for removal of brown lesions such as lentigines, nevus of Ota, and café-au-lait spots (Table 54-6).