[Effect of protection measures for visual fatigue of radar operators in Beijing].
Li
Xia
X
Jing
Bai-Sheng
BS
Li
Ai-Hong
AH
D000293:Adolescent; D000328:Adult; D001248:Asthenopia / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008889:Military Personnel; D011825:Radar; D055815:Young Adult