[…] life, whereas refractive errors (hypermetropia, myopia), as well as photophobia, constant eye poking, pressing, or rubbing (known as Franceschetti signs) and consequent enophthalmos
[symptoma.com]
The same process likely is responsible for giving the eyes a deep-set appearance known as enophthalmos.
[disorders.eyes.arizona.edu]
Repeated pressure on the eye may also be responsible for the relative enophthalmos often seen in these patients. The ERG is reduced or absent early and permanently.
[disorders.eyes.arizona.edu]