If a child is cross eyed, does that mean he is blind in one eye?

No: But it can mean that 1 of tue eyes might have greatly diminished vision. This child should be taken as soon as possible to a pediatric ophthalmologist. He or she will determine if glasses alone will keep the eyes straight or surgery is required.

No: Most often an eye "crosses" due to muscle weakness or preference for one eye over the other, but one can have equal vision in each eye. See a pediatric ophthalmologist as soon as it is noticed, however, as if allowed to persist it takes longer to restore the best vision. If not treated, the eye can be legally blind though not necessarily totally blind.