In one of many possible embodiments, a light therapy apparatus is provided for delivering ocular light to a subject to treat a disorder that is responsive to ocular light therapy. The apparatus comprises a power supply, a hand-held light output device having light sources powered by the power supply, and a programmable data processor coupled to the power supply and the light output device. The programmable data processor is configured to control light emissions from the hand-held light output device. In some embodiments, the plurality of light sources may provide a light output having at least forty percent blue light with a wavelength range of approximately 435 nm to 500 nm. In some embodiments, the programmable data processor is configured to control light emissions in accordance with user-defined light therapy programs.
