A lazy eye is where the vision in one eye does not develop properly. The NHS says it does not always cause symptoms and is often first found during an eye test. Many children do not notice anything wrong with their vision.
Treatment aims to improve vision in the weaker eye and should ideally start before the age of 7, while vision is still developing. Eye tests are free on the NHS for children under 16.
Signs of a lazy eye
- Shutting one eye or squinting when looking at things
- Eyes pointing in different directions (a squint)
- Not being able to follow an object or person with the eyes
- Tilting the head when looking at something
- Tired eyes, rubbing the eyes a lot, or headaches
- Difficulty catching or throwing, or tripping over a lot
- Blinking a lot
A simple check at home
The NHS suggests checking a younger child's eyes by covering each eye with your hand, one at a time. They may complain if you cover their good eye. Older children may say they cannot see as well with one eye. Go to an optician if you are worried, or if you or your child have not had an eye test for 2 years.
Treatment
Treatment depends on the cause and may include:
- Glasses to correct vision
- An eye patch over the stronger eye for a few hours a day for several months, usually with glasses
- Eye drops that temporarily blur vision in the stronger eye
- Surgery if the lazy eye is caused by cataracts or a drooping eyelid, or to straighten a squint
