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Abstract #9740 Published in IGR 5-3
Sensitivity and specificity of two glaucoma case-finding strategies for optometrists
Ieong A; Murdoch I; Cousens S; Healey P; Theodossiades JOphthalmic and Physiological Optics 2003; 23: 341-346
Current best practice for primary open-angle glaucoma case-finding comprises history-taking, disc examination, intraocular pressure measurement and suprathreshold visual field analysis (SVFA). An alternative case-finding technique was formulated replacing SVFA with computerized quantitative disc assessment, using the Heidelberg retinal tomograph II (HRT II). Each approach was adopted by four optometrists who screened 29 POAG and 37 normal patients. Average sensitivities and specificities were similar in the two groups (sensitivity 71% (SVFA) versus 69% (HRT II); specificity 94% both groups). The inclusion of pre-perimetric glaucoma cases limited the sensitivity of the optometrists in this study. There was evidence to suggest that the optometrists tended to miss early changes at the optic disc such as disc hemorrhage, nerve fiber layer defects and subtle neuroretinal thinning.
Dr. A. Ieong, Moorfields Eye Hospital, City Road, London, UK. alvineo@aol.com
Classification:
6 Clinical examination methods
