Red Eyes Dry Eyes Allergy Eyes Discomfort with Contact Lenses 
What Is Eye Redness?

Eye redness occurs when the vessels in your eye become swollen or irritated. Redness of the eye, also called bloodshot eyes, or pink eye can indicate the presence of several different health problems. While some of these problems are benign, others are serious and require emergency medical attention. The redness of your eye may be a cause for concern. However, most serious eye problems happen when you have redness along with pain or changes in your vision.
What Are the Common Underlying Causes of Eye Redness?

The most common causes of eye redness happen when the vessels on the surface of the eye become inflamed. Various irritants can cause this to occur including:
  • exposure to the sun
  • bacteria or viruses
  • coughing dry air
  • allergic reactions
  • colds
  • dust
Eyestrain or coughing can cause a specific condition known as subconjunctival hemorrhage. When this occurs, a blood blotch may appear in one eye. Even though the condition looks serious, if it is not accompanied by pain, it will typically clear up in a week to 10 days.
How Can You Prevent Eye Redness?

Most cases of eye redness can be prevented by using proper hygiene and avoiding irritants that can cause redness. Examples include:
  • Wash your hands if you are exposed to someone who has an eye infection.
  • Remove all makeup from your eyes each day.
  • Do not wear contact lenses longer than recommended.
  • Clean your contact lenses regularly.
  • Avoid activities that can cause eyestrain.
  • Avoid substances that can cause your eyes to become irritated.
  • If your eye becomes contaminated, flush it out immediately with water.