Sensitivity and specificity of two glaucoma case-finding strategies for optometrists

Ieong, A; Murdoch, I; Cousens, S; Healey, P; Theodossiades, J; (2003) Sensitivity and specificity of two glaucoma case-finding strategies for optometrists. Ophthalmic & physiological optics, 23 (4). pp. 341-6. ISSN 0275-5408 DOI:

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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 computerised 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) vs 69% (HRT II); specificity 94% both groups]. Our 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 haemorrhage, nerve fibre layer defects and subtle neuroretinal thinning.

Item Type: Article
Keywords: Aged, Clinical Competence, Comparative Study, Diagnostic Techniques, Ophthalmological, Glaucoma, Open-Angle/*diagnosis/physiopathology, Human, Middle Aged, Optometry/*methods/standards, Perimetry, Psychophysics, Sensitivity and Specificity, Tomography, Visual Fields
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
Research Centre: Malaria Centre
Tropical Epidemiology Group
PubMed ID: 12828624
Web of Science ID: 184115200007


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