title: [Tonography test according to Leydhecker. Clinical comparison by tonography according to Grant (author's transl)].
abstract: In our 1st series of examinations the Grant's 4-minutes-tonography, combined with waterdrinking (Becker), was compared with Leydhecker's modification of 7-minutes-tonography. Out of 60 healthy eyes were 13,3% false-positive with the 4-minutes-tonography, combined with waterdrinking, however with the 7-minutes-tonography none of these were glaucoma-suspicious. For 92 glaucoma-suspicious eyes, which were tested with both methods, the 7-minutes-tonography proved to be much more valuable. Leydhecker's value P3/CL3-7 offers 38,4% positive results at a starting pressure of 18-22 mm Hg, and 51,1% positive results at a starting pressure of 20-24 mmHg. Grant's 4-minutes-tonography, combined with waterdrinking (Becker), may show suspicious values at pressures of 18-22 mm Hg, however is not able to register with certainty existing pathological findings. In 2nd series of examinations 54 eyes with proven glaucoma chronicum simplex were tested with the 7-minutes-tonography. It showed a reliability of 83%.
mesh_terms: D002908:Chronic Disease; D003951:Diagnostic Errors; D005901:Glaucoma / Q000175:diagnosis; D006801:Humans; D007429:Intraocular Pressure; D013997:Time Factors; D014065:Tonometry, Ocular / Q000379:methods*; D014867:Water
chemical_list: D014867:Water
vernacular_title: Tonographietest nach Leydhecker. Klinischer Vergleich mit der Tonographie nach Grant