[Studies on spectacles correcting corneal astigmatism for the prevention of progress in myopia. I. On the measurement error and the diurnal variation of corneal astigmatism].
D000293:Adolescent; D000328:Adult; D001251:Astigmatism; D005139:Eyeglasses; D006801:Humans; D008875:Middle Aged; D009216:Myopia