The effects of lasers on people are essentially the same as for visible, ultraviolet, and infrared radiation. Lasers fall in these bands of wavelengths. Like other non ionizing radiation, the greatest danger is to the eye. Dependent on wavelength and the location where energy is absorbed, damage may be to the cornea, lens, retina, or other parts of the eye (refer to Figure 21-2). Dangers are greatest when a beam is viewed directly and may be reduced when a beam is reflected. As illustrated in Figure 21-3, properties of the reflecting surface may keep the beam essentially intact (specular reflection) or scatter the light (diffuse reflection). A polished, flat surface (like a mirror or window glass) reflects a beam with minimal absorption and little diffusion and poses the greatest reflected danger.