This feature consists of partial absence of ocular tissue (coloboma), often affecting both eyes (bilateral).

Its partial absence was no great loss.

It did not matter that in her absence, or partial absence, Beeton had shown an increasing inclination toward Sosthenna.

Aniridia is characterized by partial or complete absence of the iris.

Anaphia, also known as tactile anesthesia, is a medical symptom in which there is a total or partial absence of the sense of touch.

A related term is meromelia, which is the partial absence of a limb or limbs.

It is characterized by a partial or complete absence (agenesis) of an area of the brain that connects the two cerebral hemispheres.

This happens as a result of partial or complete absence of the corpus callosum.

In many animals, however, the partial absence of melanin contributes to superior night vision.