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Fields, DVLC and panretinal photocoagulation.

S A Buckley1, L Jenkins, L Benjamin

  • 1Stoke Mandeville Hospital, Aylesbury, UK.

Eye (London, England)
|January 1, 1992
PubMed
Summary
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Laser panretinal photocoagulation for diabetic retinopathy can impair driving ability. Many patients undergoing this treatment may fail visual field tests required by the Driver and Vehicle Licensing Centre.

Area of Science:

  • Ophthalmology
  • Diabetic Retinopathy Management
  • Visual Field Testing

Background:

  • Panretinal photocoagulation (PRP) is a standard treatment for proliferative diabetic retinopathy, aiming to prevent vision loss.
  • PRP can, however, compromise peripheral retinal function, potentially impacting visual field tests.
  • The Driver and Vehicle Licensing Centre (DVLC) has specific visual field regulations for drivers.

Purpose of the Study:

  • To assess the impact of laser panretinal photocoagulation on the visual field function of patients with proliferative diabetic retinopathy.
  • To determine the rate at which patients treated with PRP fail to meet DVLC driving regulations.

Main Methods:

  • A cohort of 30 patients who had undergone PRP was evaluated.
  • Visual field testing was performed using the Esterman binocular field test on the Humphrey field analyser.

Related Experiment Videos

  • Patient data including laser type, age, number of burns, and comorbidities like hypertension were analyzed.

    • Main Results:

    • 15 out of 30 patients failed to meet DVLC visual field regulations.
    • Xenon laser treatment was associated with a higher likelihood of failure compared to other laser types.
    • Hypertension was a significant factor (p=0.04) in patients who failed the visual field tests.
    • Two patients with unilateral PRP failed due to other pre-existing field defects.

    Conclusions:

    • A significant proportion of patients treated with PRP may not meet driving visual field standards.
    • Formal visual field testing is crucial for drivers with a history of PRP, even with minimal laser treatment, due to potential impacts from both the treatment and diabetes itself.
    • Hypertension appears to be a risk factor for visual field impairment after PRP.