Table 26.1 Causes of chorioretinal folds
Category Examples
Orbital space-occupying pathology Orbital tumors and thyroid eye disease
Choroidal tumors Melanoma of the choroid and metastatic carcinomas
Optic disc swelling Expansion of the optic nerve at its entrance into the eye,causing compression of the surrounding choroid
Ocular hypotony Low intraocular pressure, e.g. post-surgical, trauma
Hypermetropia A single underlying pathology (e.g. inflammation during
infancy) may be responsible for both hypermetropia
and chorioretinal folds
Previous scleral surgery Such as scleral buckling procedures for retinal
Posterior uveitis
An incidental finding in an otherwise normal eye
Other causes Intraocular tumors, choroidal neovascular membranes
and orbital cellulitis

Fig. 26.1

Alternating light and dark lines between the optic disc and macula.

Surgery Intraocular or orbital surgery may be indicated depending on the underlying cause.

Advice Although treatment of the underlying condition sometimes results in resolution of the folds, they quite often persist indefinitely.

Choroidal folds and retinal folds