"Lazy eye," amblyopia, is often misinterpreted as an eye that crosses or wanders. These conditions can be associated with "lazy eye," but the real meaning is an eye that does not see as well as it should. When an eye has a high refractive error (nearsightedness, farsightedness or astigmatism) or is misaligned (strabismus — crossing or wandering) at an early age, the child will use the other eye, which has clearer vision. Over time, this becomes a vicious cycle, the stronger eye is used more and the weaker eye is used less so it becomes even weaker. Amblyopia can also be caused by a structural problem in the eye, like congenital cataracts or a droopy eyelid that prevents the eye from having a clear image.