title: Closed-circuit television as an electronic visual aid.
authors: B C
authors: BC
authors: Sun
authors: L N
authors: LN
authors: Wei
authors: Y Q
authors: YQ
authors: Gao
authors: S T
authors: ST
authors: Zhang
authors: L H
authors: LH
authors: Zou
authors: S
authors: S
authors: Yan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001296:Audiovisual Aids; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009896:Optic Atrophy / Q000150:complications; D011932:Reading; D013690:Television / Q000295:instrumentation; D015354:Vision, Low / Q000209:etiology