Severe hypertension (extremely high blood pressure)Uncontrolled diabetesOptic neuritis (inflammation of the optic nerve)

In some cases, this symptom is accompanied by dizziness, confusion, or difficulty speaking. But even if it happens alone—get medical help immediately.

Your eyes may be trying to tell you that your brain or cardiovascular system is in distress.

2. Yellowing of the Eyes

When the whites of your eyes (also known as the sclera) take on a yellowish tint, it’s not just a cosmetic concern.