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How good are we at assessing driving visual fields in diabetics?
A R Pearson1, S J Keightley, A G Casswell
1Sussex Eye Hospital, Brighton, UK.
Eye (London, England)
|May 18, 1999
Summary
Driving visual field tests after laser panretinal photocoagulation (PRP) for diabetic retinopathy show variability in interpretation. This study highlights differences in how consultants and experts assess fields, impacting patient driving eligibility.
Area of Science:
- Ophthalmology
- Visual Science
- Public Health
Background:
- Diabetic retinopathy patients undergoing panretinal photocoagulation (PRP) risk peripheral vision loss, potentially failing driving tests.
- Current interpretation of visual field requirements for driving may lead to inconsistent pass/fail rates.
Purpose of the Study:
- To assess agreement in interpreting driving visual fields post-PRP among ophthalmologists.
- To identify specific visual field deficits compatible with passing the driving test.
Main Methods:
- Evaluated uniocular and binocular Esterman visual fields from 60 diabetic patients post-PRP.
- Fields were assessed by the chairman of the Visual Standards Sub-Committee and four consultant ophthalmologists.
- Analyzed agreement and identified key factors influencing pass/fail decisions.
Main Results:
- Good agreement for binocular fields, moderate for uniocular fields.
- Divergent decisions occurred in up to 15% of binocular and 43% of uniocular fields.
- Key aspects influencing pass/fail decisions were identified.
Conclusions:
- Significant variation exists in assessing driving visual fields post-PRP between consultants and the expert chairman.
- Standardized assessment based on identified criteria can reduce current variations in field assessment.