Understanding Red Eye: Causes, Symptoms, and Treatments

By David Anderson
Understanding Red Eye Causes, Symptoms, and Treatments

Red eye is a broad term used to describe the appearance of red or bloodshot eyes. While it’s often harmless and temporary, red eye can sometimes be a sign of a more serious condition. Knowing the causes and symptoms can help you understand when it’s time to treat it at home and when you should seek medical advice.

What Causes Red Eye?

Red eye can be caused by a variety of factors:

  • Conjunctivitis (Pink Eye): This common eye infection can be bacterial, viral, or allergic in nature. It causes redness, swelling, and sometimes discharge from the eye. More about Conjunctivitis.
  • Subconjunctival Hemorrhage: A small blood vessel in the eye can burst due to strain, trauma, or even a strong sneeze. This causes a bright red patch on the white of the eye but is usually harmless and resolves on its own.
  • Blepharitis: This chronic condition affects the eyelids, leading to redness, irritation, and swelling of the eyelid margins. More about Blepharitis.
  • Uveitis: Inflammation inside the eye can cause redness, pain, and blurred vision. Uveitis requires prompt treatment to prevent more serious complications.
  • Glaucoma: A sudden rise in eye pressure can lead to red eye, along with severe pain, nausea, and blurred vision. This is an emergency that requires immediate attention. More about Glaucoma.

Symptoms of Red Eye

In addition to the visible redness, you may experience:

  • Itchiness or irritation
  • Watery eyes
  • Discharge or crusting (especially with infections)
  • Blurred vision

If the red eye is accompanied by pain, vision changes, or sensitivity to light, it’s essential to seek professional care.

Treatments for Red Eye

Treatment depends on the underlying cause:

  • Artificial tears: For mild irritation or dryness, over-the-counter lubricating drops can provide relief.
  • Antibiotic eye drops: If a bacterial infection like conjunctivitis is diagnosed, your doctor may prescribe antibiotic drops.
  • Warm compresses: For conditions like blepharitis, applying a warm compress can help reduce inflammation and cleanse the eyelid.
  • Steroid drops: In cases of uveitis or severe inflammation, your doctor may prescribe anti-inflammatory steroid drops to reduce swelling.

If you’re unsure about the cause of your red eye or if symptoms persist, don’t hesitate to book an eye exam. Early intervention can often prevent more serious complications.

Medical Disclaimer

This article is for information purposes only and should not be considered medical advice. If you or any other person has a medical concern, you should consult with your health care provider or seek other professional medical treatment. Never disregard professional medical advice or delay in seeking it because of something that you have read on this blog, website or in any linked materials.

About the Author:

David Anderson
David Anderson is the founder and medical director at Anderson Eye Care. With over 30 years of experience, he personally performs all of our procedures, consultations and assessments.

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