@CNN: A man’s vision changed dramatically after he took a gulp of a drug he bought online that is commonly used to treat erectile dysfunction, according to a report. He immediately began to see flashes of light in both eyes, and his vision became tinted red. https://t.co/225kyeFSpL https://t.co/eVk3FenJKb

@CNN: A man’s vision changed dramatically after he took a gulp of a drug he bought online that is commonly used to treat erectile dysfunction, according to a report. He immediately began to see flashes of light in both eyes, and his vision became tinted red. https://t.co/225kyeFSpL https://t.co/eVk3FenJKb