Marked thickening of the left lateral rectus muscle, largely in the belly, which is displacing and compressing the proximal aspect of the intra-conal optic nerve. In addition similar changes in the left superior rectus muscle.
Associated enhancement and inflammatory change in the intraconal fat. This is contributing to impingement of the optic nerve at the level of the optic apex.
Mild enlargement and enhancement on the left superolateral lacrimal gland with associated inflammatory changes extending into the subcutaneous fat.
Normal right orbit.
Normal intracranial appearances.