King Charles’ fans have received an upsetting news as the monarch appeared with a bloodshot eye during his latest appearance.

The King welcomed the French President Emmanuel Macron and his wife, First Lady Brigitte Macron, at Windsor Castle.

However, what caught the attention of the eagle-eyed royal fans was his bloodshot eyes as it spread fears over his health.

Charles’ appearance raised concerns especially after reports that his cancer is considered “totally incurable,” per Radar Online.

According to royal insiders, the 76-year-old monarch will still continue with “rigorous treatment” in hopes of fighting the illness.

Royal expert Camilla Tominey shared that while the cancer may not go away, doctors believe he could live with it for many years.

“The talk now is that he may die ‘with’ cancer, but not ‘of’ cancer following a rigorous treatment program,” the expert said.

As for his red eye, palace sources have dismissed fears that the King’s red eye has to do anything with his ongoing battle with cancer.

The outlet cited the Mayo Clinic, who compared a burst blood vessel in the eye to a simple skin bruise and said it’s usually not serious.

“A subconjunctival hemorrhage often occurs without any obvious harm to your eye,” they said. “Even a strong sneeze or cough can cause a blood vessel to break in the eye. You don’t need to treat it.

“A subconjunctival hemorrhage may look alarming, but it’s usually a harmless condition that disappears within two weeks or so.”