A method of using and devices for delivering electromagnetic radiation of a selected wavelength for the treatment of conditions pertaining to cephalic sensory organs, in particular to treating conditions of the eye (ocular conditions) and conditions pertaining to the ear (otic conditions). The invention is in particular for the treatment of organelles associated with the acoustic and optic nerves and more particularly for the treatment of age related degeneration of such organelles. The invention also provides devices for treating ocular and otic conditions.