[One necessary condition for selecting optimal eyeglasses].
Volkov
V V
VV
D000065:Accommodation, Ocular; D005139:Eyeglasses / Q000592:standards*; D006801:Humans; D009907:Optometry / Q000592:standards; D012030:Refractive Errors / Q000503:physiopathology / Q000534:rehabilitation*
Ob odnom nepremennom uslovii dlia podbora optimal'nykh ochkov.