Sun Damage @ Dermatologist?

I recently watched a program and saw people at the dermatologist having their picture taken with a special camera, and it shows them all of their sun damage under the skin, what you can%26#039;t see. Does anybody know what this procedure is called? I would love to have it done!|||I know what you%26#039;re talking about but no I don%26#039;t know what it%26#039;s called. Just go make an appointment with the dermatologist and they%26#039;ll know what you%26#039;re talking about. PS I watched that program too!!!