Skin damage images induced by 1319 nm continuous-wave laser. The black circles indicated the lesions. (a) Immediately post exposure, (b) 1 h post exposure, (c) 24 h post exposure, (d) 7 days post exposure, (e) immediately post exposure, And (f) 24 h post exposure. Laser conditions from (a) to (d): beam diameter was 1.96 cm, exposure duration was 3.0 s, laser power was 16.0 W, and the radiant exposure was about 1.11 times of the damage threshold. Laser conditions of (e) and (f): beam diameter was 1.96 cm, exposure duration was 3.0 s, laser power was 24.0 W, and the radiant exposure was about 1.67 times of the damage threshold.