At what age do you need to wear corrective lenses when driving?

Answer: B — Regardless of age if prescribed by a doctor

The requirement to wear corrective lenses while driving is determined by whether an individual has been prescribed lenses by a doctor, rather than strictly based on age. This means that if a healthcare professional has identified a need for corrective lenses to ensure safe driving, the individual must wear them regardless of their age. This approach emphasizes the importance of vision health and safety on the road, ensuring that all drivers meet the necessary visual standards to operate a vehicle safely. The other options suggest age-specific criteria that do not align with the emphasis on individual assessments made by eye care professionals.