the examination of the photographs showed slight refractive errors in 33 cases ( 66 eyes ; 19.5 % ) : two of them of symmetrical myopia of -1.0 and -1.75 diopters and 31 of symmetrical hyperopia of +0.25 to +4.25 diopters in retinoscopy .
C0034951
refractive errors
C0020490
hyperopia