Studies in refraction. I. The precision of retinoscopy.
D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D009887:Ophthalmoscopy; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis; D012160:Retina; D012737:Sex Factors