By now, it's common knowledge that a laser shining directly onto your camera's sensor will lead to its demise. However, it seems that some lasers can also damage a sensor when reflected off of even non-mirrored surfaces, such as human skin.
Videographer Andy Boyd learned this lesson the hard way when filming a tattoo removal procedure with his Sony a7S II. With each burst of the laser, you can clearly see the sensor sustaining damage.
So take heed – if observing any medical procedure using lasers, wear eye protection and leave your camera at home.