Esotropia is an ocular disorder that denotes inward turning of one or both eyes. It is a medical condition with various synonyms, such as convergent strabismus or internal strabismus. The term "convergent" implies that one or both eyes tend to focus on a point closer to the face, causing an inward deviation. The word "strabismus" also refers to an eye condition of misalignment. Internal strabismus is another term used for esotropia due to the inward deviation of the eye(s). Some other synonyms for esotropia are "cross-eyed" or "squint." These words describe the eye's position, where one eye looks at the object, while the other eye looks inward.