About: progressive lens

Premodifier: progressive
Head noun: lens

Same concepts
http://dbpedia.org/resource/Progressive_lens

Broader concepts

label	provenance	confidence
lens	isap:167200736	0.717764
single vision lens	isap:167201243	0.707929
design	isap:307575332	0.390314

Narrower concepts

label	provenance	confidence