Red Eye
Description and Symptoms
Red eye is a common symptom and has many different causes. A detailed history and examination are required to determine the cause.
It is important to note whether the redness is all around the white of the eye. It can suggest conditions such as blepharitis, dry eye, thyroid dysfunction. These can associate red eye, allergic conjunctivitis or infection.
If the redness affects a sector of the eye, it is more likely to be episcleritis. It can appear like an inkblot- subconjunctival haemorrhage.

I had the best experience working with Dr Crawley. I felt looked after and she took the time to get to know me. I would highly recommend her.

From the moment I met her to the moment I left, I was treated with great courtesy and kindness, and everything was explained to me in layman’s terms so I could fully understand my condition. I was immensely impressed.

“Thank you very much for seeing me yesterday, you were marvellous and a pride to the NHS”

Dear Laura,
Just a quick note to say thanks for looking after my mum Mrs M. so wonderfully. It was so good of you to take so much time and care as she was very worried about my appointment and you really made such a difference to my experience. Thank you.

Dear Angela and Laura,
Thank you very much for seeing me yesterday. You were both marvellous and a pride to the NHS. You could, if you two wish, send this to your line manager. Thank you again!

Dear Laura,
Enjoy your holiday and thanks for everything so far.
Best Wishes
Causes of Red Eye
There are many causes if the red eye. This is a general term rather than a specific diagnosis.
The primary causes are
- Blepharitis and associated dry eye
- Allergic conjunctivitis
- Infective conjunctivitis
- Subconjunctival haemorrhage
- Contact lens-related infection
Red Flags: If you have painful redness affecting one eye. Then this requires urgent examination, especially if
- You are a contact lens wearer as ulceration of the cornea needs to be identified or excluded
- Feeling nauseous or have vomited -this usually indicates high pressure in the eye
- Highly sensitive to standard lighting- photophobia and redness usually indicate uveitis and inflammation inside the eye
All these need expert advice and urgent treatment. Ms Crawley is experienced in managing all of these conditions.
Red eye diagnosis and examination
Ms Crawley will check your vision. She will examine your eyes on the slit lamp microscope and may take swabs of your eye. She will discuss the result with you and make an individualised treatment plan based on the findings.
Accreditations and Memberships
Related articles
If you have glaucoma and need cataract surgery
A fast-track treatment for individuals with glaucoma who also need cataract surgery is a game changer because it dramatically reduces the time that patients will spend in surgery and recovery. Thanks to medical advances, both conditions can now be treated in the same operation, meaning that the recovery time for patients is exactly the same as for a single cataract operation. Laura Crawley and her colleagues at the Western Eye Hospital at Imperial College NHS Healthcare Trust were one of the first teams in the UK to offer revolutionary laser therapy and micro-stent implants to glaucoma patients.
Over 60? Take this 2 minute quiz to assess your glaucoma risk
Over 60? Take this 2 minute quiz to assess your glaucoma risk 1. When did you last have a routine eye test? All routine eye tests involve measuring the pressure inside the eye [...]
Glaucoma symptoms – 5 important warning signs you need to see a professional right away
Glaucoma in its commonest form is entirely asymptomatic and you cannot rely at all on noticing a change in vision or other eye symptoms to alert you to the possibility that you might have early disease. However, there are some important warning signs you should not ignore.
Find us on social media