Understanding Red Eye: Causes, Symptoms, and Treatments

Understanding Red Eye Causes, Symptoms, and Treatments

600+ 5-star reviews

Excellent TrustPilot & Google rating

10,000+ procedures performed

30+ Years experience

Table of Contents

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.

Take Our Online Vision Quiz

Find out how good your vision is and what kind of procedures you would be most suitable for by taking our free online quiz below.  

AEC - Suitability Assessment

Let's begin! On a scale of 1-10, 10 being excellent, how good is your vision?

There's no right or wrong answer. 

5

Unfortunately, laser eye surgery isn't right for you at the moment.


The Royal College of Ophthalmologists recommends that in order to have laser eye surgery you must be over 18 years of age and have a stable glasses prescription. This is normally defined as no change greater than 0.5 units (0.5D) in the last two years. The reason is that your eyes continue to develop until you're 21 or 22 so your prescription may change between now and then which affects how we perform laser eye surgery too. 

What is your name and email address?

This is so we can send you the results. 

Why choose Anderson Eye Care?

David Anderson provides laser eye surgery treatments and cataract removal surgery in Hampshire, Surrey, Jersey & surrounding areas.

What Others Say About Anderson Eye Care

Debby Stanley-Woodcock
Within 3 weeks I had 20/20 vision
Highly recommended. Mr Anderson and team are absolutely amazing. I used to wear varifocal glasses so I had bilateral multi-focal lens replacement. From the moment I came out of surgery I could already read (through the gap in my eye covers). I'm so happy with the results. Within 3 weeks I had 20/20 vision and it's only going to get better. So I'd like to than Mr Anderson for giving me my glasses-free sight again.
Glenda Kelley
his staff are wonderful and very caring, as is he, I am blessed.
I would recommend Mr Anderson to everyone who is suffering with their eyes. I was almost blind when I found him. Due to NHS keep cancelling my appointments I am blessed I have coped on oxygen 24/7 and no one wanted to do my eyes. My whole life has changed due to Mr Anderson saying it was no problem for him to do my eyes. I can see perfect now and I could even pass a driving license test wow I'm overjoyed his staff are wonderful and very caring, as is he, I am blessed. God bless him.
David Newman
The best decision I ever made
Excellent at every stage of the process from booking an initial consultation to having Lens Replacement Surgery to follow-up. David was brilliant as was the rest of his team. I have keratoconus and have previously only been able to function when wearing piggyback contact lenses. If I was unable to wear them for any reason I was effectively blind. Now, my sight is so improved that I can manage with just glasses.
Steve
Fantastic attention to detail
I was a patient of David's having laser eye surgery and am now a colleague of his. I can highly recommend David. He is a skilful surgeon and is naturally a details person. He gives truly bespoke solutions for refractive surgery.
Dr Bram
Brilliant surgeon, fantastic care
I had LASEK eye surgery to correct significant amblyopia. Mr Anderson was thorough and reassuring. I always felt in good hands and the aftercare I received was excellent. I would strongly recommend this surgeon and his team for the excellent quality of service and the brilliant care and results that I received.
Ms H
Thank you Mr. Anderson.
It is a daunting experience and most peculiar sensation having eye surgery. However if all surgeons and teams are as good and caring as Anderson Eye Care we can be assured of a pain free and quite amazing result. My eye sight was particularly poor and I now see better than ever in my life. My local optician said it was the best result he had ever seen. I felt reassured and safe through the whole experience.
Hilary
Great experience of Lasik
Great experience from initial consultation through to actual procedure. Nothing was too much trouble and all questions / queries / concerns were answered in a very clear and simple way. David and his support staff of nurses and opticians were excellent. I would have zero hesitation in recommending David to friends / colleagues.
Michael
Laser eye surgery - excellent service, would highly recommend
I underwent LASEK laser eye surgery from David Anderson nearly 5 months ago. The service really was superb from start to finish. David is clearly highly skilled at what he does and I felt completely at ease throughout the process. I experienced minimal discomfort both during and after the procedure and I am extremely pleased with the results. I would definitely recommend David to anyone that is considering undergoing laser eye surgery.

Download your Free Laser Infopack

Enter your details below to get instant access to your free laser eye surgery infopack.