hypotropia

In hypotropia the light lands on the superior aspect of the cornea.

There are also vertical tropias (hypertropia and hypotropia) and cyclotropias.

"Hypertropia" is upward, and "Hypotropia" is downward; these are types of vertical strabismus, which are less common.

In Graves ophthalmopathy, it is not uncommon to see an esotropia (due to pathology of the medial rectus muscle) co-morbid with a hypotropia (due to pathology of the inferior rectus muscle).

This condition includes horizontal tropias exotropia and esotropia which are outward and inward horizontal deviations and hypertropia and hypotropia which are when one eye is set higher or lower than the other eye.