Treatment
Lazy eye can be reversed if it is detected and treated early. However, the longer it goes untreated, the weaker the lazy eye gets. Eventually, vision loss in the weaker eye cannot be reversed.
The best treatment is to make your child use their lazy eye. Patch therapy is a treatment where one eye is covered to encourage the use of the weaker eye. It is most effective in helping young children strengthen an under-developed eye. The earlier the treatment begins, the stronger the weaker eye becomes. This is commonly used to treat lazy eye and squint.
In both cases, one eye is weaker than the other. The patch covers the good eye, forcing the child to use the weaker eye. In this way, the weaker eye becomes stronger.