NHS Highlights Subtle Eye Cancer Signs Often Dismissed as Normal
The National Health Service has issued a crucial alert about a subtle sign of cancer that can manifest in the eyes, urging the public not to brush off these symptoms as ordinary eye conditions. Health experts emphasise that there are eight key signs everyone should be aware of, as early detection can be life-saving.
Understanding Eye Cancer Statistics and Types
On its official website, the NHS notes: "Around 850 cases of eye cancer (ocular cancer) are diagnosed in the UK each year." This form of cancer can develop in various parts of the eye, with four primary types identified:
- Eye melanoma – the most common type
- Squamous cell carcinoma
- Lymphoma
- Retinoblastoma – primarily affecting children
Medical professionals caution that cancer can originate in the tissues surrounding the eye or metastasise to the eye from other areas of the body, such as the lungs or breasts. This makes recognising the warning signs particularly critical for timely intervention.
Subtle Symptoms That Should Not Be Ignored
Eye cancer does not always present obvious symptoms and is sometimes only discovered during routine eye examinations. Persistent eye irritation, for example, might be a subtle warning sign that many people mistakenly attribute to normal fatigue or minor allergies.
The NHS lists several symptoms that warrant medical attention:
- Shadows, flashes of light, or wiggly lines in your vision
- Blurred vision that persists
- A dark patch in your eye that appears to be growing
- Partial or total loss of vision
- Bulging of one eye
- A lump on your eyelid or within your eye that increases in size
- Eye irritation that does not resolve
- Pain in or around your eye, although this is less common
The NHS clarifies: "These symptoms can also be caused by more minor eye conditions, so they're not necessarily a sign of cancer. But it's important to get the symptoms checked by a doctor as soon as possible."
Focus on Eye Melanoma: Causes and Risk Factors
Melanoma is a type of cancer that begins in pigment-producing cells called melanocytes. While typically associated with the skin, it can also develop within the eye. Eye melanoma most commonly affects the eyeball, with medical professionals referring to it as uveal or choroidal melanoma depending on the specific area. It can also occur in the conjunctiva (the thin layer covering the front of the eye) or the eyelid.
The exact cause of eye melanoma remains unclear, but it develops when pigment-producing cells in the eye proliferate uncontrollably, forming a tumour. Several factors may increase the risk:
- Lighter eye colour – individuals with blue, grey, or green eyes have a higher risk compared to those with brown eyes
- White or pale skin – eye melanoma predominantly affects white people and is more common in those with fair skin
- Unusual moles – irregularly shaped or coloured moles increase the risk of both skin and eye melanoma
- Use of sunbeds – evidence suggests UV radiation from sunbeds can elevate the risk
- Overexposure to sunlight – this increases skin cancer risk and may also be a factor for eye melanoma
The NHS adds: "The risk of developing eye melanoma also increases with age, with most cases being diagnosed in people in their 50s."
Diagnosis and Treatment Pathways
If a GP or optician suspects a serious eye problem, they will refer the patient to an ophthalmologist, a specialist eye doctor. If eye melanoma is suspected, referral to one of the UK's four specialist eye cancer centres follows:
- London
- Sheffield
- Liverpool
- Glasgow
At these centres, patients typically undergo a series of tests, including:
- An in-depth eye examination to check for abnormalities
- An ultrasound scan of the eye to determine tumour position and size
- A fluorescein angiogram, where dye is injected to highlight the tumour for photography
Sometimes, a biopsy is performed using a thin needle to extract tumour cells for genetic analysis, helping predict the likelihood of cancer spread or recurrence.
Treatment options for eye melanoma include:
- Brachytherapy – radioactive plaques placed near the tumour
- External radiotherapy – targeted radiation beams
- Surgery – to remove the tumour or part of the eye
- Enucleation – removal of the eye, replaced with an artificial one
- Immunotherapy – medicine to boost the immune system against cancer
The NHS notes that chemotherapy is rarely used for eye melanoma but may be suitable for other types of eye cancer.
Preparing for a GP Appointment
Cancer Research UK recommends several steps to prepare for a GP appointment if you have concerns:
- Document your symptoms, including onset, frequency, and triggers
- Request a specific gender of doctor when booking if preferred
- Express any worries about cancer openly
- Disclose any family history of cancer
- Bring a friend or relative for support and note-taking
- Ask for explanations of anything unclear and request written information if needed
By raising awareness of these subtle signs, the NHS aims to encourage earlier detection and treatment, potentially improving outcomes for those affected by eye cancer.
