The specific visual question is not yet clear from the records.
Organise the complete letter, attachments and reports. Record the terms used in the documents and do not add assumed requirements.
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Twilight vision and driving licences: glare sensitivity despite good visual acuity
Twilight vision and driving licences: why good visual acuity does not settle glare and contrast sensitivity and when an ophthalmological examination matters.
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BRANDAUER Rechtsanwälte
Law firm in Salzburg
Every matter is handled by a coordinated team of lawyers, legal staff and specialists. In driving licence cases we look at the file, deadlines and commercial consequences together.
17 September 2026, Mag. Bernhard Brandauer, Rechtsanwalt
Good visual acuity does not answer the question of safe vision in twilight and at night on its own. Section 7(2)(4) FSG-GV also names sufficient twilight vision and undisturbed glare and contrast sensitivity. Anyone who is strongly dazzled while driving or struggles to recognise contrast in low light despite sharp vision should have this visual function assessed by an ophthalmologist.
The legal classification depends on the individual report. A general visual acuity test cannot replace an ophthalmological examination where doubts arise. This article explains the standard and how to prepare such a case. Visual-field loss, monocular vision and general glasses restrictions are separate questions.
Which visual functions count alongside visual acuity
Which visual functions count alongside visual acuity
Section 7(1) FSG-GV requires sufficient visual acuity for safe driving. In cases of doubt, the provision calls for an examination by a specialist in ophthalmology and optometry. The regulation also identifies further visual-function criteria.
For twilight vision, glare sensitivity and contrast sensitivity, section 7(2)(4) FSG-GV sets out a separate standard. A visual-acuity result therefore describes only part of visual function. The legal question is whether the criteria required for safe driving are met as a whole.
Classification
Consider visual acuity and low-light vision separately
Each item answers a different question in the driving licence proceedings.
| Point for review | Question | Possible basis |
|---|---|---|
| Visual acuity | Are contours and signs recognised sharply enough? | Vision test and ophthalmological report |
| Twilight vision | Is visual function in low light sufficient for safe driving? | Ophthalmological assessment |
| Glare and contrast sensitivity | Are oncoming light and differences in brightness processed sufficiently? | Report on visual function and a specific account |
The table replaces neither a medical examination nor legal review of a decision.
Why glare sensitivity can matter despite good visual acuity
Why glare sensitivity can matter despite good visual acuity
Driving at dusk brings different light conditions together. Headlights, street lighting and dark areas can make contrasts harder to recognise. A person may recognise signs sharply in a standard vision test and still experience problems with vision in oncoming light or low light.
The legal assessment cannot be answered by a general assumption. It depends on the visual function established by the specialist and on whether it raises a question about safe driving. Personal observations should therefore be described precisely, while they cannot replace the medical report.
When an ophthalmological assessment becomes important
When an ophthalmological assessment becomes important
Section 7(1) FSG-GV provides for a specialist examination in cases of doubt. The same applies where a progressive eye disease is suspected. The provision identifies the need for specialist clarification. It does not supply a diagnosis for an individual case.
Take the authority letter, existing ophthalmological reports and a short timeline of the symptoms to the next review. Note when glare or missing contrast occurs, in which light conditions it appears and whether the situation has changed. This organisation makes it easier to match the authority question with the medical report.
The guide to an official medical invitation explains how to organise the authority question, appointment and requested records.
Read the report and driving licence decision together
Read the report and driving licence decision together
An ophthalmological report and a later driving licence decision have different functions. The report describes the medical basis. The decision states the legal consequence drawn by the authority. Read both documents with the original request and service record in a single chronology.
Check whether the decision clearly links the visual function, its reasons and any condition or restriction. If the operative part differs from the authority question or the report, the complete file should be reviewed promptly. The article on appealing a driving licence decision explains the importance of service and deadlines.
Section 7(2)(4) FSG-GV names sufficient twilight vision and undisturbed glare and contrast sensitivity as visual-function criteria.
Preparation check
Are the visual symptoms, report and authority question organised?
The check does not assess visual function. It shows whether the key records for an initial legal review are together.
Already know you want to get in touch? Go straight to the enquiry form.
Does the authority letter or report mention twilight vision, glare sensitivity or contrast sensitivity?
All paths at a glance
Overview of all answers.
Open the official assessment focus area →
The specialist basis is not yet fully organised.
Keep the examination request and all ophthalmological reports together. The check assesses neither symptoms nor visual function.
The decision and service records are not yet complete.
Arrange the decision, reasons, attachments and service record in one chronology. This permits comparison of the authority consequence with the report.
The key records are organised for an initial review.
Keep the authority letter, report, decision and service record together. Medical and legal assessment remain matters for the individual proceedings.
Related guidance and checks
Review visual function, reports and the decision further
Official medical assessment
Bring the authority question, report and decision together.
Official medical invitation
Organise the appointment, records and later submissions.
Assessment records checklist
Collect letters, reports and service records completely.
Appeal against a driving licence decision
Review the decision, service and deadline for a remedy.
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FAQ
Frequently asked questions about twilight vision and driving licences
Is good visual acuity enough for driving at night? +
Good visual acuity does not answer that question on its own. Section 7(2)(4) FSG-GV also names twilight vision and glare and contrast sensitivity.
What does glare sensitivity mean in the proceedings? +
It is a visual-function criterion. Whether a relevant limitation exists must be assessed by a specialist and compared with the authority question in the individual case.
When is an ophthalmological examination provided for? +
Section 7(1) FSG-GV provides for a specialist examination in cases of doubt and where a progressive eye disease is suspected.
Which records should I organise for review? +
Keep the complete authority letter, existing ophthalmological reports, the examination request, the decision and the service record. A short timeline of the specific situations can assist the comparison.
Does the preparation check assess my vision? +
No. The check only organises the records and authority question. It replaces neither an ophthalmological examination nor legal review of the driving licence proceedings.
Topics
Driving licence lawTwilight visionGlare sensitivityVisual functionFSG-GV
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