Your GP will carry out a'red reflex test' in a darkened roomusing an ophthalmoscope (a magnifyinginstrument witha light at one end).

When a light is shone into your child's eyes, your GP will see a red reflectionif the retina is normal. If the reflection is white,it may be a sign of an eye condition such as cataracts, retinal detachmentor retinoblastoma. In this case, your childwill be urgently referred (within two weeks) to an eye specialist for further investigation.

The eye specialist (ophthalmologist)will examine your child's eyes, and they may carry out another red reflex test. Eye drops will be used to increase the size of your child's pupils, allowing a clear view of the retina at the back of the eye.

Anultrasoundscan is also sometimes used to help diagnose retinoblastoma. This is a painless procedure where gel is rubbed on the outside of the eyelid and a smallultrasound probe is placed on the eyelid, which scans the eye.

After these investigations,if the eye specialist thinks your child has retinoblastoma they'll refer themto one of two specialistretinoblastoma treatment centres,either atThe Royal London Hospital(RLH)or the Birmingham Children's Hospital (BCH).

Your child's appointment should be within a week of being seen at your local eye clinic. At the specialist centre, your child will need to have ageneral anaesthetic so their eyes can be thoroughly examined and a diagnosis of retinoblastoma can be confirmed or ruled out.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018