Assertion: eye's lens | /r/HasProperty | flat continual use of eyes
Facets:
value: comparatively
type: MANNER
value: for near work
type: PURPOSE
Source sentences:
text: the ciliary muscle is relaxed and the lens is comparatively flat Continual use of eyes for near work produces eyestrain b/c of the prolonged contraction of the ciliary muscle (so take breaks to relax muscle)