advertisement
Abstract #15393 Published in IGR 1-3
Does corneal ocular 'pseudo-hypertension' exist?
Velten IM; Budde WM; Juenemann AKlinische Monatsblätter für Augenheilkunde 1999; 215: 56-58
BACKGROUND: The relation between Goldmann applanation tonometry and central corneal thickness (CCT) has been evaluated in several studies during the last thirty years. Patients with ocular hypertension were found to have a significantly higher CCT compared with normals and glaucomas. PATIENTS: Two sisters with elevated CCT and ocular hypertension diagnosed by raised intraocular-pressure (IOP) readings on Goldmann applanation tonometry. RESULTS: In both patients, there were no signs of early functional or morphological glaucomatous changes. Maximum IOP was 30 and 26 mmHg. The corneal pachymetry revealed an increased CCT in both patients (700 and 680 μm, respectively), while corneal morphology was normal. CONCLUSIONS: Ocular hypertension can be misdiagnosed by too high applanation tonometer readings in patients with markedly elevated CCT. Therefore, before the onset of treatment, corneal pachymetry should be performed in patients with ocular hypertension to exclude ocular 'pseudohypertension' and to avoid unnecessary treatment.LA: German
Dr. I.M. Velten, Augenklinik mit Poliklinik der Universität Erlangen-Nürnberg, Erlangen; Germany
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
