Assertion: therapy lamp | /r/HasProperty | effective
Facets:
value: for the intended purpose
type: PURPOSE
Source sentences:
text: Modern phototherapy lamps used in the treatment of seasonal affective disorder and sleep disorders either filter out or do not emit ultraviolet light and are considered safe and effective for the intended purpose, as long as photosensitizing drugs are not being taken at the same time and in the absence of any existing eye conditions.