Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.
2 min synopsisUK scopeSources checked 7 Sept 2026Clinical review pending
!
A new field defect requires action
Sudden loss of part of the visual field can represent retinal detachment, stroke or another urgent neurological or ocular disorder. Reading a vision chart successfully does not make the person safe to drive.
Action: Arrange the appropriate emergency eye or stroke assessment and advise the person not to drive. Organise safe transport and document the advice before addressing longer-term licensing and rehabilitation.
Synopsis
Translate visual-field findings into safe driving advice, appropriate licensing notification and practical support for everyday independence.
Visual acuity and visual field assess different requirements for safe driving.
DVLA covers England, Scotland and Wales; DVA administers driver licensing in Northern Ireland.
A driver with a visual-field defect must notify the appropriate licensing agency.
Key red flags
Sudden persistent field loss requires urgent diagnosis even when central acuity remains normal.
Investigation priorities
01
Visual acuity and ocular examinationFirst step
Measure central function and investigate an ocular contribution.
Management branches
Immediate advicePrevent an unsafe journey
A new visual-field defect is identified or suspected during assessment.
Explain that the person should not drive while the new defect is being assessed.
Arrange emergency investigation where indicated and confirm a safe way home or to the receiving service.
Persistent functional lossSupport adaptation and review entitlement
A stable defect continues to affect mobility, work or confidence.
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 7 Sept 2026; clinical approval remains outstanding.