What condition is identified by the crossing of the eyes?

The condition identified by the crossing of the eyes is strabismus. Strabismus, often referred to as "crossed eyes," occurs when the eyes are not properly aligned with each other. This misalignment can result in one eye looking straight ahead while the other may turn inwards, outwards, upwards, or downwards. Strabismus can lead to problems such as double vision or amblyopia, commonly known as "lazy eye."

In contrast, exophthalmos pertains to an abnormal protrusion of the eyeball, which is commonly seen in conditions like Graves' disease. Astigmatism refers to a refractive error caused by an irregular shape of the cornea or lens, leading to blurred vision. Diplopia, or double vision, often results from conditions affecting the ocular muscles or the nerves supplying them, but it is not characterized by the crossing of the eyes specifically.