The epiglottis during the production of the highest notes rises upward and backward against the posterior pharyngeal wall in such a way as almost entirely to separate the pharyngeal cavities, at the same time that it gives an unusual conformation to those resonant chambers." Complete absence of the eyes is a very rare anomaly.

Wordsworth describes a baby of seven weeks, otherwise well formed and healthy, which had congenital absence of both eyes.

The parents of this child were in every respect healthy.

There are some cases of monstrosities with closed, adherent eyelids and absence of eyes.

Holmes reports a case of congenital absence of both eyes, the child otherwise being strong and perfect.