Lazy eye (amblyopia) - Treatment 

Treating lazy eye 

Once diagnosed, a lazy eye (amblyopia) is treated by an eye specialist (ophthalmologist) and an orthoptist (a specialist in childhood eye problems).

The younger the child is when a lazy eye is diagnosed, the more successful treatment is likely to be. If treatment is started after the age of eight, it is unlikely to be as successful.

The two main treatment options for a lazy eye are:

  • treating, or correcting, any underlying eye problems
  • encouraging the use of the affected eye so that vision can develop properly

Treating underlying eye problems


Vision problems, such as short, or long- sightedness, can be corrected using glasses. These usually need to be worn constantly  and are regularly checked.

Glasses may also help to straighten a squint and, in some cases, can fix the lazy eye without the need for further treatment.

Your child may say that they can see better without their glasses. This is because their eyes have become used to working hard to focus, and they now find it hard to let the glasses focus for them. They will need plenty of encouragement to wear their glasses continuously.

An alternative to glasses are contact lenses although this may only be suitable for older children.

Read more about treating short-sightedness and long-sightedness with corrective lenses.


Cataracts can be removed to treat blurred and distorted vision.

Cataract surgery can be carried out either under local, or general, anaesthetic, and the procedure can sometimes take as little as 20 minutes.

Your child may be kept in hospital overnight to check their recovery process, and they may have to use an eye patch, or eye drops, afterwards.

Read more about the treatment of cataracts in children.

In some cases, surgery is used to improve the appearance of a squint. The operation will either strengthen, or weaken, the eye muscles of the lazy eye to change its position. This means that the lazy eye will appear to be better aligned with the good eye. The child’s vision will not improve, but their eyes will appear straighter and it will help the eyes work better together.  

Read more about treating squints.

A droopy eyelid (ptosis) can also be corrected using surgery.   

Encouraging the use of the eye

A number of different treatments options can be used to encourage your child to use the affected eye. These are outlined below.

Using a patch

Using a patch is known as occlusion. It involves placing a patch with a sticky rim is over the ‘good’ eye so that the lazy eye is forced to work. It can be very effective in improving the sight in the lazy eye.

The length of time the child will need to wear the patch will depend on how old they are, how serious the problem is and how much they co-operate with wearing the patch. They should have a follow up check after three months, although this could be more frequent.

Patches are most effective before a child reaches seven or eight years of age. Most children will need to wear the patch for a few hours a day for several weeks. While the patch is on, the child should do close-up activities, such as colouring, reading or schoolwork. Patches can be worn with glasses.

Using a patch to treat a lazy eye can be a time consuming process, and it can sometimes be an unpleasant experience for the child. It is important to explain to your child the reasons for using a patch, the importance of sticking with the treatment so that they are motivated to carry it out.

Eye drops

Atropine eye drops can be used to blur the vision in the good eye. They dilate (expand) the pupil of the good eye and blur near vision, which encourages the use of the lazy eye. Side effects that can occur after using eye drops include:

  • eye irritation
  • flushing (reddening) of the skin
  • headaches

However, these side effects are usually infrequent and they rarely outweigh the benefits of using eye drops. 

Eye drops can be as effective as using a patch and often the choice of treatment is a matter of preference. So children who don’t like having drops in their eyes can wear a patch and vice versa.

Page last reviewed: 25/01/2012

Next review due: 25/01/2014


How helpful is this page?

Average rating

Based on 63 ratings

All ratings

Add your rating


The 1 comments posted are personal views. Any information they give has not been checked and may not be accurate.

Robert Johnstone said on 10 February 2014

The part which discusses how to strengthan a lazy eye talks only about children. I have a lazy eye at 66. It is possible to strengthen the eye even at my age - it works - see numerous studies made and papers produced on this subject.

Report this content as offensive or unsuitable

Lack of compliance

Most poor results of the treatment of a lazy eye are due to a lack of compliance from either the parent, or carer, or the child. It is very important that a suitable treatment is found which can be stuck to.

If you are having trouble with one kind of treatment, you should discuss an alternative with your orthoptist (a specialist in childhood eye problems).

If surgery is recommended, you should be aware that it can take more than one operation to improve the appearance of a squint. Also, following surgery, glasses may still need to be worn and, if the lazy eye returns, a patch may still be necessary.

Teach your child the everyday essentials

Tips on teaching your child the essentials, such as potty training and household safety