An illuminated eyewear device for directing visible light, preferably towards the wearer, and preferably towards their eyes, for providing light therapy to treat seasonal affective disorder, SAD. The device is worn similarly to conventional spectacles, with frame 12 having arms 13 for the side of the head, possibly ears and preferably a bridge area for the nose (prior art nose support 4 of fig 1 is less clear in fig 3). The device comprises a transparent substrate, preferably in front of the wearers eyes, having one or more light sources 21, such as LEDs, mounted around its perimeter which couple light into the substrate where it propagates. The substrate may be optically neutral or ophthalmic lenses that the wearer looks through. The substrate has refractive light scattering means (fig 4, 5) which overcome the total internal reflection guiding of the light and distribute the light towards the wearer, the scattering means preferably on the inner (wearer side) surface. The scatterers may be an array of grooves, micro-lenses or dots and they may vary with distance from the LED injection edge (fig 5, 6) such that the resultant emitted illumination is uniform over the substrate area, and thus uniform over the wearers eyes such that there is less of a problem of glare (see fig 1 prior art compared to fig 3). The substrate thickness may taper away from the injection edge. The eyewear may include power supply 22 and control means 23, 25 for the intensity and possibly colour of lights, eg LEDs, and may include wireless communication means 24.
