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WGA Rescources

Abstract #5186 Published in IGR 1-2

La mesure de l'epaisseur corneenne est-elle fiable et utile? (Is corneal thickness measurement reliable and useful?)

Bron A; Chapard J; Creuzot-Garcher C; Guerzider V; D'Athis P
Journal Français d'Ophtalmologie 1999; 22: 160-168


PURPOSE: We evaluated the accuracy and the reproducibility of central corneal thickness measurements using an ultrasound pachymeter, and its usefulness in clinical practice. METHODS: We calculated the intra-observer, inter-observer, and inter-session variability in control subjects (n = 38). We observed the diurnal variation (n = 8) and the role of surgery (n = 12) on central corneal thickness. We measured and compared central corneal thickness and intraocular pressure in 6 groups (control subjects n = 134, primary open-angle glaucoma n = 111, ocular hypertension n = 66, normal tension glaucoma n = 12, diabetes mellitus n = 62, corneal graft n = 27). We studied the influence of dorzolamide on central corneal thickness (n = 16). RESULTS: The intra-observer variability was 9 ± 4 microns, whereas the inter-observer and inter-session variabilities were 4 microns and 5% m respectively. The central corneal thickness in patients with ocular hypertension (587 ± 41 microns) was significantly greater than control subjects (548 ± 32 microns) and all the other groups (p < 0.001). No influence of dorzolamide was observed on central corneal thickness. CONCLUSION: Central corneal thickness assessed with an ultrasound pachymeter may be a useful and accurate method in selected patients whose intraocular pressure measurement does not correlate with other clinical findings.LA: French

Service d'Ophtalmologie, CHU Dijon.


Classification:

2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)



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