Squint

Also called Strabismus or Crossed eyes

A squint (strabismus) is when the eyes point in different directions. One eye may turn inwards, outwards, upwards or downwards while the other looks straight ahead. It is most common in young children, often linked to long-sightedness, but it can develop at any age. A new squint in an adult can be a sign of another condition.

Last updated Nov 9, 2026

What it is

It is important to treat a squint in children early, as it can lead to a lazy eye.

Treatment may include glasses, eye patches or drops to improve vision in the weaker eye, eye exercises and sometimes surgery to realign the eyes.

Common signs

  • Eyes that look in different directions
  • Double vision, especially in adults
  • Closing or covering one eye
  • Tilting or turning the head to see
  • Poor vision in one eye

How it is usually diagnosed

  • Eye tests by an orthoptist or optometrist
  • Examination by an eye specialist

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Orthoptic and eye test reports
  • Glasses prescriptions
  • Patching plans
  • Surgery notes

Questions to ask your doctor

  • Does my child need glasses or patching?
  • How long will treatment take?
  • Would surgery help?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A sudden squint or double vision in an adult, especially with headache or weakness: get urgent help, call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources