What condition is characterized by the inward deviation of one eye relative to the other?

The condition characterized by the inward deviation of one eye relative to the other is known as strabismus. This term broadly describes a misalignment of the eyes, which can manifest in various forms, including when one eye turns inward, outward, or at varied vertical angles. In the case of inward deviation specifically, the condition is often referred to as esotropia, which is a type of strabismus.

Strabismus affects binocular vision, leading to issues such as double vision or depth perception problems. Since the question specifically highlights inward deviation, it fits under the umbrella of strabismus, as this term encompasses all forms of eye misalignment, making it the most fitting choice in this context.

Other options, while related to vision, do not describe the inward deviation specifically. Exotropia refers to an outward deviation of the eye, hypertropia pertains to a vertical deviation, and myopia is a refractive error concerning nearsightedness, which does not relate to the alignment of the eyes. Therefore, strabismus is the correct choice as it encapsulates the general condition where one eye may deviate from its proper alignment, including inward deviations.