Is there a surgery to correct a lazy eye?

Yes but....: Binocular vision is usually established by the age of 18 months. After that age surgery has only a cosmetic value.

Yes and no: Lazy eye, or amblyopia is a condition where the brain begins turning off one eye because the image is different/fuzzy. It may be improved by non-surgical means if the eyes line up correctly, but it often leads to cross eyes. Surgery can help re-align the eyes as part of treatment, but if the problem has gone on too long, the amblyopia can persist. At that point, surgery's value is cosmetic