title: [THE CENTRAL SHADOW IN THE PUPIL OR BINOCULAR PHOTOSKIASCOPY. (PRELIMINARY REPORT)].
mesh_terms: D006801:Humans; D009887:Ophthalmoscopy; D011680:Pupil; D012030:Refractive Errors
keywords: OPHTHALMOSCOPY; PUPIL; REFRACTIVE ERRORS
vernacular_title: DER ZENTRALE SCHATTEN IN DER PUPILLE ODER DIE BINOKULARE PHOTOSKIASKOPIE. (VORLAEUFIGE MITTEILUNG)