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Glaucoma screening with oculokinetic perimetry in general practice: is its specificity acceptable?
T Christoffersen1, T Fors, S Waage
1Department of Ophthalmology, University Hospital, Tromsø, Norway.
Eye (London, England)
|January 1, 1995
Summary
Oculokinetic perimetry (OKP) shows promise for glaucoma case-finding in general practice, identifying 94% of true negatives. However, a high false-positive rate limits its use in mass screening alone.
Area of Science:
- Ophthalmology
- Public Health
- Diagnostic Accuracy
Background:
- Glaucoma is a leading cause of irreversible blindness worldwide.
- Early detection and case-finding are crucial for effective glaucoma management.
- General practice settings offer opportunities for wider population screening.
Purpose of the Study:
- To evaluate the specificity of oculokinetic perimetry (OKP) for identifying glaucoma cases in a general practice setting.
- To assess the reliability and agreement of OKP results between different observers.
Main Methods:
- Oculokinetic perimetry (OKP) screening of visual fields in 185 patients aged 40+ in general practice.
- Comparison of OKP results with Bjerrum campimetry in 96 patients.
- Assessment of inter-observer agreement for OKP in 80 patients.
Main Results:
- OKP demonstrated a test specificity of 94%.
- Of 17 abnormal OKP tests, 6 indicated glaucoma or glaucoma suspects; 3 had cataracts; 8 had no eye disease.
- High agreement was observed for normal OKP tests (0.96), with moderate agreement for abnormal tests (0.79).
Conclusions:
- Oculokinetic perimetry (OKP) shows potential utility for glaucoma case-finding in primary care.
- The test correctly identified all 10 previously diagnosed glaucoma patients.
- The proportion of false-positive results suggests OKP is not suitable for standalone mass screening.