Assertion: convex lens | /r/CapableOf | cover eye
Facets:
value: with single piece of plastic
type: OTHER
value: with a minimal plastic frame
type: OTHER
Source sentences:
text: They may have a single curved semi-circular lens that covers both eyes and much of the same area of the face covered by protective goggles, usually with a minimal plastic frame and single piece of plastic serving as a nosepiece.