Tears play a critical role in moistening your eyes, neutralizing and removing toxins, dust, and debris. Therefore, inadequate or low-quality tears can cause increased sensitivity, eye infection and blurred vision. Severe dry eyes may precipitate an eye inflammation, corneal surface abrasion, and corneal ulcers leading to visual impairment and in extreme cases, the loss of an eye. It’s essential to see your eye doctor when dry eye symptoms persist for over two days or when they worsen.