Final answer:
The statement is FALSE. Both illegal and legal drugs can negatively alter vision and cause a crash.
Step-by-step explanation:
The statement is FALSE. While illegal drug use can certainly have a negative impact on vision and contribute to impaired driving, it is not the only factor that can alter vision and cause a crash. There are several legal drugs, such as prescription medications and over-the-counter medicines, that can also negatively affect vision and increase the risk of accidents.
For example, certain medications used to treat allergies, colds, or flu symptoms may cause drowsiness or blurred vision. These side effects can impair a person's ability to see clearly and react quickly, making them more vulnerable to accidents while driving.
Therefore, it is important to be cautious with any drug or medication that can affect vision or cognitive abilities and to follow the instructions provided by healthcare professionals.