Orbital decompression is effective in improving vision in most patients with thyroid optic neuropathy, but induces or worsens diplopia in a high proportion of these patients. Proptosis can be effectively and dramatically improved.

Choristomatous cysts of the orbit may occur with non-keratinizing epithelial linings, and such cysts tend to differ clinically from the commoner dermoids and epidermoids. They may also occur in atypical sites such as the inferior orbit.

Treatment of certain types of carotid cavernous fistulas that cannot be closed by the conventional endovascular (arterial and venous) approaches can be successfully closed by using a transvenous approach through the SOV.

No abstract