Yellow eyes: causes, symptoms and treatment (UK guide)

Yellowing of the whites of the eyes — known medically as scleral icterus — is almost always a signal from the liver, the bile ducts or the blood, not the eye itself. In this UK-focused guide I explain what yellow eyes actually mean, when to seek same-day medical review, and how the underlying cause is investigated and treated.

What is scleral icterus?

Icterus is the yellow discolouration of tissue caused by a build-up of bilirubin, a yellow pigment produced when red blood cells are broken down. The whites of the eyes (the sclera) show it first because the tissue is thin, well-perfused and pale, so even small rises in bilirubin become visible before the skin turns yellow.

Genuine yellow eyes are always caused by raised bilirubin. It is not caused by tiredness, screen time or 'toxins'.

The most common causes

In UK adults, the causes of yellow eyes fall into three broad groups:

- **Liver problems** — viral hepatitis (A, B, C, E), alcohol-related liver disease, non-alcoholic fatty liver disease, autoimmune hepatitis, or drug-induced liver injury (including paracetamol overdose).

- **Bile duct obstruction** — gallstones lodged in the common bile duct, pancreatic or biliary tumours, or strictures.

- **Increased red-cell breakdown (haemolysis)** — sickle cell disease, thalassaemia, autoimmune haemolytic anaemia, or Gilbert's syndrome, a common and harmless genetic variation that causes mild intermittent yellowing during illness or fasting.

In newborns, mild jaundice in the first week of life is common and usually resolves. In adults, jaundice always needs medical assessment.

When yellow eyes are an emergency

Attend A&E or call 111 the same day if yellow eyes appear alongside any of the following:

- Severe abdominal pain, especially in the right upper abdomen

- High fever, shivering or confusion

- Dark urine and pale, chalky stools

- Easy bruising or bleeding

- Known paracetamol overdose or suspected drug overdose

- Rapidly deepening yellow colour over 24–48 hours

These features can indicate acute liver failure, ascending cholangitis or biliary obstruction — all of which need urgent hospital treatment.

What yellow eyes are not

Two conditions of the sclera can look yellowish but are not jaundice:

- **Pinguecula and pterygium** — raised yellow-white deposits on the conjunctiva, usually from years of sun and dust exposure. Localised, not diffuse.

- **Fatty deposits in older adults** — subconjunctival fat can give a mild off-white/yellow tint but does not shift the true sclera colour.

If your GP or optometrist is unsure whether the yellow tint is jaundice or a scleral change, a same-week blood test for bilirubin and liver function tests will settle it.

How yellow eyes are investigated

Your GP will typically arrange:

- Liver function tests (bilirubin, ALT, AST, ALP, GGT, albumin)

- Full blood count and reticulocyte count to look for haemolysis

- Hepatitis A, B, C and E serology

- Ultrasound scan of the liver and biliary tree if obstruction is suspected

Further imaging (MRCP, CT) or specialist referral to hepatology or gastroenterology follows if the cause is not obvious.

How is it treated?

There is no eye-specific treatment for yellow eyes — the yellow colour resolves as the underlying cause is treated. Depending on the diagnosis this could be:

- Antiviral treatment for hepatitis B or C

- Stopping the causative drug or alcohol

- Endoscopic removal of gallstones from the bile duct (ERCP)

- Surgery for gallstones or biliary tumours

- Haematology treatment for haemolytic anaemia

In Gilbert's syndrome, no treatment is required — the intermittent yellowing is harmless.

Do I need to see an eye specialist?

Yellow eyes are a systemic sign, not an eye disease, so the first port of call is your GP or A&E, not an ophthalmologist. An eye specialist becomes relevant if the yellow tint turns out to be a scleral or conjunctival lesion (pinguecula, pterygium, scleral thinning) rather than true jaundice, or if a separate eye complaint is present. See our eye conditions guide for a general overview.

Next steps

If you are worried about yellow eyes, please contact your GP the same day, or A&E if any of the emergency features above are present. If you have another eye concern — floaters, blurred vision, glare or a possible cataract — you can book a consultation with my private practice or call **020 3137 3237**.