What is nystagmus?
In short
- Eyes which move constantly on their own, from side to side, up and down or in a circle. It reduces sharpness but does not lead to total loss of sight.
- Eyes which move constantly, which the person may not notice themselves.
- There is no cure for nystagmus, but some underlying conditions can be treated and sight can be made the most of.
Also called: Wobbly eyes
- Part of the eye
- Eye movement
- Group
- Focus & eye coordination
- Vision functions involved
- Contrast and detail, Focus, Alignment and depth
- Main source
- RNIB
Nystagmus is an uncontrolled, constant movement of the eyes, sometimes described as a wobble. It can be side to side, up and down, circular or a mix. The movement makes it harder to see fine detail, and many people with nystagmus have reduced vision. Infantile nystagmus appears in the first few months of life, on its own or alongside another eye condition such as congenital cataract, ocular albinism, a retinal dystrophy or an optic nerve condition. Acquired nystagmus starts later, usually from something affecting the brain, such as a stroke, multiple sclerosis, a head injury or some medicines.
Optic nerve
Carries signals from the retina to the brain. Glossary entry
Nystagmus
Eyes which move on their own, usually from side to side. Reduces sharpness. Often present from early childhood. Glossary entry
How nystagmus can affect day-to-day life
You may recognise some of these situations, or none of them. The point is to find help with the things you want to do.
Reading the board
The constant movement leaves less time to focus on each word.
A copy of the board work on paper or a tablet, a seat on the side which suits the null zone, and extra time in tests.
Busy, tiring days
Sight gets noticeably worse when tired, anxious or unwell.
Build in rest. Do detailed tasks early in the day.
Changes you may notice
- Eyes which move constantly, which the person may not notice themselves.
- Reduced sharpness which varies with where you look, how far away things are, tiredness, stress and feeling unwell. Many people need longer to read.
Everyone is different. Symptoms on their own cannot identify a condition.
What to do about a new or sudden changeAssessment and care
There is no cure for nystagmus, but some underlying conditions can be treated and sight can be made the most of. An eye team assesses the type, looks for a cause, prescribes glasses or contact lenses where they help, and refers to a low-vision service. A paediatric eye team usually leads for a child. Acquired nystagmus needs the cause found, so new nystagmus in an adult should be seen promptly.
Depth and distance
People with nystagmus may have poor depth perception and find judging distances difficult. Steps, kerbs and ball games take more care. The visual system uses other clues such as size, shadow and texture over time.
How vision is affected
These topics explain the parts of vision involved. They do not predict your sight, diagnose anything or show the condition itself.
Contrast and detail
Sharp edges only help when they stand out from the background. Contrast, print size and blur each change how easy a task is.
Open the contrast and detail labFocus
The cornea and lens focus light onto the retina. A focusing problem is different from damage to the light-sensitive cells or the optic nerve.
Open the focus labAlignment and depth
Your brain combines the view from each eye with perspective, size and movement. Judging depth uses several clues at once.
Open the alignment and depth labEveryday support
Tell school or work how your sight varies and that you need longer to read. Sit where you can use your null zone. Larger print, good contrast and screens with magnification help. Tiredness, stress and illness make the movement worse, so plan demanding visual tasks for when you are fresh. The Nystagmus Network offers support and a helpline.
Driving: you must tell DVLA about an eye condition which affects both eyes, or your only seeing eye. Driving and your eyesight
Common questions
Will my child's nystagmus get worse?
RNIB says nystagmus does not usually get worse with age, and most people with it have some useful vision. How much it affects sight varies a lot, and is often worse when it comes with another eye condition.
Why does my child tilt their head?
Many people with nystagmus have a null zone, a direction of gaze where the eyes move least and sight is clearest. Children find it naturally and tilt or turn to use it. Do not try to correct the head position.
What is oscillopsia?
When nystagmus starts in adult life the brain has not adapted, so the world seems to move or jump. It can cause nausea and dizziness. Depending on the cause it may settle, or it may last.
A question to take to your appointment
What type of nystagmus is this, is there an underlying cause we should look for, and which aids suit the way my sight varies?Prepare your appointment checklist
Sources and review status
- Written by
- The Omnirx.io team, from the sources above
- Sources checked
- Page updated
- Next review due
- Clinical review
- Not yet. No clinician has endorsed this page.
- Reading level
- About 15 words a sentence, 261 words of guidance
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Cite this page
Glanced (2026) Nystagmus: what the name means, care and support. Omnirx.io team for Medstack Ltd. Available at: https://www.glanced.co.uk/condition/nystagmus/ (Accessed: ). Source checked 4 October 2026.
Educational information. Follow the advice of your own eye-care team.