Blurred or double vision/

loss of vision


  • When looking for signs of a brain tumour, there are two main types of visual abnormality to be aware of: changes to vision such as blurred or double vision and abnormal eye movements.

  • Other visual symptoms that may be caused by a brain tumour include worsening in vision and eyesight – be particularly aware where these have occurred suddenly.

  • Double vision is where your eye doesn't work quite as it should and you see two images of a single object that you are looking at rather than one. With blurred vision, a single image will appear, but will be unclear.

Indications of sight problems include:

  • Difficulty seeing when the teacher displays information at the front of the room at school or college.

  • Needing to sit closer to the television or computer screen.

  • Reduced awareness of people or objects to the sides, above or below (indicating a loss of peripheral vision).

  • Finding it difficult to navigate new places, or asking for help to do so.

  • Stumbling and tripping more often.

If you're a teenager and you're concerned about your symptoms, it's best to get them checked out by your doctor or an ophthalmologist.

For more information for health care professionals

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