258. 視覚障害
視覚障害は、明瞭に見る、距離を判断する、動きを検知する、危険を認識する能力へ影響する視力低下です。視力低下、視野狭窄、コントラスト感度低下、複視、暗所視力低下などがあります。安全運転は視覚へ大きく依存するため、運転者はその国の最低視力基準を満たし、必要なら眼鏡、コンタクトレンズなど認められた視力補助具を使用します。
How can visual impairment affect driving?
Visual impairment can make it harder to recognise signs, detect pedestrians and vehicles, judge distance and speed or see hazards in time.
What aspects of vision are important for driving?
Important visual functions include visual acuity, field of vision, contrast sensitivity, depth perception and the ability to see in changing light conditions.
Can you drive if you need glasses or contact lenses?
Yes, provided your corrected vision meets the applicable legal standards. If your licence requires glasses or contact lenses, they must be used while driving.
Can someone with vision in only one eye drive?
In some countries, yes, provided the person meets specific visual-acuity, visual-field and adaptation requirements. The exact rules vary between countries.
Can visual impairment lead to restrictions on a driving licence?
Yes. Depending on the impairment, a licence may include conditions such as mandatory glasses, daytime-only driving, geographic restrictions or other limitations.
What should you do if your eyesight becomes worse?
If your vision changes significantly or may no longer meet the required standards, seek an eye examination and medical advice before continuing to drive.

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