光照治療

light therapy / phototherapy

light / ray / CL:道[dao4] / bright / only / merely / to use up

illumination

variant of 照[zhao4] / to shine / to illuminate

according to / in accordance with / to shine / to illuminate / to reflect / to look at (one's reflection) / to take (a photo) / photo / as requested / as before

to rule / to govern / to manage / to control / to harness (a river) / to treat (a disease) / to wipe out (a pest) / to punish / to research

to treat (an illness) / medical treatment / therapy

to treat / to cure / therapy