Final answer:
Drugs that inhibit protein synthesis and cause powerful eye irritation are contraindicated for patients with a history of visual disturbances like flashes, floaters, and light-induced headaches.
Step-by-step explanation:
The drug that is extremely contraindicated for a patient with a history of flashes and floaters, and headache on exposure to light in the dark — especially when associated with symptoms like severe stinging of the eyes or temporary blindness — could be those that inhibit protein synthesis. Drugs that are contraindicated are those which could further worsen the symptoms or pose a significant risk to the patient. In such a case, it's crucial to avoid medications that could cause powerful eye irritation or impact the retina in a way that exacerbates existing conditions.