A dermatological treatment device 10 comprises a distance measuring device which triggers a light source 52 when a predetermined distance has been travelled across the skin surface 58. The device may include a light source 52 which may be a flash lamp or a laser, or be connected to one and direct light through a light director 16. The light director may be a diffraction beam splitter and may direct the light to the skin surface as a plurality of individual light beams 68. The light beams may be arranged to produce a line of contact spots or a two dimensional array. The distance measurer may be an optoelectronic sensor (fig 4) or a mechanical component such a roller 22. The device may be used for fractional laser therapy, pulsed treatment or other dermatological skin treatment. A method for dermatological treatment is also disclosed, comprising moving a light director aperture in a prescribed direction relative to a skin surface and triggering a light source to produce a short-duration pulse of light and directing this light at a skin surface as a plurality of individual light beams every time the light director aperture travels a prescribed distance relative to the skin surface.
