Eye Patching
for Lazy Eye
Patching is the oldest lazy eye treatment and still one of the most studied. It works best when the hours are right, the routine is daily and the patch comes off gradually. Track your child's hours with the diary below.
How does eye patching treat lazy eye?
Eye patching covers the stronger eye so the brain has to use the weaker one, which builds up its vision. For moderate lazy eye, two hours a day works about as well as six; severe lazy eye usually starts at around six hours. Most children improve over three to six months. Patching trains the vision of one eye, not the two eyes working together.
- Moderate lazy eye
- About 2 hours a day
- Severe lazy eye
- About 6 hours a day
- First improvement
- Often within 6 to 12 weeks
- Works best
- Before age 7
Weekly Patching Diary
Set the hours your eye doctor prescribed, then log each day. The diary is saved on this device only.
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
- Sun
Follow the hours your eye doctor prescribed. The diary is stored only in this browser and is never sent anywhere.
How Many Hours a Day, and for How Long?
The hours are set by how weak the eye is, not by the age of the child. Large trials found that for moderate lazy eye, two hours a day gave the same result as six, and for severe lazy eye, six hours did as well as full-time patching. Fewer hours mean less upset and better adherence.
| Weaker eye reads | Severity | Typical starting plan |
|---|---|---|
| 6/9 | Mild | Glasses alone first, then 1 to 2 hours if a gap remains |
| 6/12 to 6/24 | Moderate | About 2 hours a day |
| 6/36 or worse | Severe | About 6 hours a day |
Progress is checked every six to twelve weeks. When the vision stops improving across two visits, the hours are reduced slowly rather than stopped, because vision slips back in roughly one child in four.
What Your Child Sees With the Patch On
Pick the line the weaker eye reads, then choose Patch on. This is why the first two weeks are the hardest.
Moderate lazy eye
Move the slider to compare the two eyes.
With each eye tested on its own, the gap between them is what defines a lazy eye.
An illustration of blur and suppression, not a vision test. Only an eye examination can measure each eye.
What Patching Does Not Do
Patching makes the weaker eye see more clearly while the patch is on. It does not teach the two eyes to work together. When the patch comes off, many children go back to suppressing the weaker eye, and depth perception often stays poor.
That is why a modern plan often adds dichoptic therapy or binocular vision therapy, in which both eyes stay open and each sees part of the picture. The evidence is compared in our guide to lazy eye treatment without patching.
Patching for months with little change? An assessment checks the glasses, the suppression and whether binocular therapy would help.
If Patching Is Not Working
Some children will not keep a patch on, some get sore skin, and some stop improving. There are other ways to make the weaker eye work:
- Atropine eye drops in the stronger eye, which blur its near vision for several days
- A blurring filter stuck onto the lens of the stronger eye
- Dichoptic and binocular therapy with both eyes open
- Re-checking the glasses prescription, which is often the missing step
Making Patching Easier
The first two weeks are the hardest, because your child is suddenly relying on the eye that sees less well. It gets easier as that eye improves. Ideas that help, with more in our guide to lazy eye exercises:
- Patch during something that needs close attention: drawing, puzzles, building toys or a tablet game
- Use adhesive skin patches; patches on glasses invite peeking
- Start with short sessions and build up over the first week
- Keep a reward chart for the hours worn
- Let your child choose the patch design
- Peel patches off slowly and use a gentle moisturiser if the skin reddens
Everything We Have Written on Lazy Eye
Back to the overview: amblyopia (lazy eye) treatmentBy age
Treatments
Common questions
Parent Guides on This Topic
- Spotting lazy eye in a baby The age-by-age warning signs from newborn to three years, and why a school screening will not find them.
- Can lazy eye actually be cured? What the success rates look like by age, and why binocular therapy outperforms patching alone.
- Patching versus vision therapy Why amblyopia often returns after patching stops, and what treating the suppression instead involves.
- Lazy eye treatment, step by step Glasses, patching, drops and binocular therapy in the order they are used, with a tool to see which fit your child.
Questions Families Ask
How long does it take for patching to work?
Is 2 hours of patching a day enough?
Can patching make the good eye weaker?
Does patching work for adults?
What if my child refuses to wear the patch?
Why did the lazy eye come back after patching stopped?
Find Out How Much the Weaker Eye Can Gain
A lazy eye assessment measures the vision in each eye, checks for a squint and for suppression, and sets out a written plan. In clinic in Chennai and Hyderabad, with online consultations across India.