Looking at Christmas tree lights may reveal signs of astigmatism

Looking at Christmas tree lights may help identify astigmatism, a common vision disorder affecting about 33% of Americans. If lights appear as streaks instead of distinct spots, it could indicate this condition. Astigmatism occurs when the eye's lens is irregularly shaped, causing blurred vision. Symptoms include eye strain, headaches, and difficulty seeing clearly at various distances. It can be hereditary or develop later in life. At-home tests, like the astigmatism chart, can suggest the presence of the disorder, but a doctor’s diagnosis is necessary. Treatment options include glasses, contact lenses, or laser surgery.