Introduction

B etween 500 and 600cases of eye cancer (ocular cancer) are diagnosed in the UK each year.

There are a number of different types of cancer that affect the eyes, including:

  • eye melanoma
  • squamous cell carcinoma
  • lymphoma
  • retinoblastoma a childhood cancer

Cancer can also sometimes develop in the tissues surrounding your eyeball or spread to the eye from otherparts of the body, such as the lungs or breasts.

This topic focuses on melanoma of the eye, one of the most common types of eye cancer.The Cancer Research UK website hasmore information about the other types of eye cancer .

This page covers:

Symptoms of eye cancer

About melanoma of the eye

What causes eye melanoma?

Diagnosing melanoma of the eye

Treatments for eye melanoma

Outlook for eye melanoma

Melanoma of the eye

Melanoma is cancer that develops from pigment-producing cells called melanocytes. Most Skin cancer (melanoma) develop in the skin, but it's also possible for them to occur in other parts of the body, including the eye.

Eye melanoma most commonly affects the eyeball. Doctors sometimes call ituveal or choroidal melanoma, depending on exactly which part of your eye is affected.

Itcan also affect the conjunctiva, the thinlayer that covers the front of the eye, or the eyelid.

What causes eye melanoma?

Eye melanoma occurs whenthe pigment-producing cells in the eyes divide and multiply too rapidly. This produces a lump of tissue known as a tumour.

It's not clear exactly why this occurs, but the following factors may increase the risk of it happening:

  • lighter eye colour if you have blue, grey or green eyes, you have a higher risk of developing eye melanoma comparedwith people who have brown eyes
  • white or pale skin eye melanoma mostly affects white people and is more common inthose with fair skin
  • unusual moles if you haveirregularly shaped or unusually coloured moles , you're more at risk of developing skin cancer and eye melanoma
  • use of sunbeds there's some evidence to suggest that exposing yourself to ultraviolet (UV) radiation from sunbeds, for example, can increase your risk of eye melanoma
  • overexposure to sunlight this increases your risk of skin cancer, and may also be a risk factor for eye melanoma

The risk of developing eye melanoma also increases with age, with most cases being diagnosed in people in their 50s.

Read about the risk factors for other types of eye cancer on the Cancer Research UK website.

Diagnosing  melanoma of the eye

If your GP or optician (optometrist) suspectsyou have a serious problem with your eyes, they will refer you to a specialist eye doctor called an ophthalmologistfor an assessment.

If they suspect you have melanoma of the eye, they'll refer you to a specialist centre for eye cancer. There are four centres in the UK, located in London, Sheffield, Liverpool, and Glasgow.

It's likely you'll have a number of different tests at the centre, including:

  • an eye examination to look at the structures of your eyes in more detail and check for abnormalities
  • an ultrasound scan of your eye a small probe placed over your closed eye uses high-frequency sound waves to create an image of the inside of your eye; this allowsyour doctor tofindout more about the position of the tumour and its size
  • afluorescein angiogram where photographs of the suspected cancer are taken using a special camera after dye has been injected into your bloodstream to highlight the tumour

Occasionally,a thin needlemay beused to remove a small sampleof cells fromthetumour (biopsy) .The genetic information in these cells is analysed togive an indication of the chances of the cancer spreading or coming back.

Treatments  for eye melanoma

Treatment for melanoma of the eye depends on the size and location of the tumour. Your care team will explain each treatment option in detail, including the benefits and any potential complications.

Treatment will aim to conserve the affected eye whenever possible.

The main treatments for eye melanoma are:

  • brachytherapy tiny plates lined with radioactive material called plaques are inserted nearthe tumour and left in place for up to a week to kill the cancerous cells
  • external  radiotherapy a machine is used to carefully aim beams of radiation at the tumour to kill the cancerous cells
  • surgery to remove the tumour or part of the eye this may be possible ifthe tumour is small and you still have some vision in your eye
  • removal of the eye (enucleation) this may be necessary if the tumour is large or you've lost your vision;the eye will eventually be replaced with an artificial eye that matchesyour other eye

Chemotherapy is rarely used for eye melanoma, but may be suitable for other types of eye cancer.

TheCancer Research UK website has more information about the treatment options for eye cancer and the types of eye cancer surgery .

Outlook for eye melanoma

The outlook for melanoma of the eye depends on howbig the cancer is at the time it's diagnosed and exactly which parts of the eye are affected.

Overall:

  • about 8 out of every 10 people (80%) diagnosed with a small eye melanoma will live for at least five years after diagnosis
  • about 7 out of every 10 people (70%) diagnosed with a medium-sized eye melanoma will live for at least five years after diagnosis
  • about5out ofevery 10 people (50%) diagnosed with a large eye melanoma will live for at least five years after diagnosis

TheCancer Research UK website has more information about the stages ofeye cancer and statistics and outlook for eye cancer .

Content supplied by the NHS Website

Medically Reviewed by a doctor on 30 Nov 2016