When Vision Blurs Blue: Tadalafil, NAION, and the Eye Symptoms You Can't Afford to Ignore
Most men who take tadalafil will never experience an eye problem beyond a faint blue tint or mild light sensitivity. But a rare condition called NAION demands attention — especially for men with diabetes, heart disease, or crowded optic discs. Here's what the latest regulatory labeling means and which symptoms should send you straight to the phone.