MRI of the Orbits and Optic Nerves
MRI of the orbits and optic nerves is a high-resolution imaging technique used to evaluate the eye sockets, optic nerves, and surrounding structures without exposure to ionizing radiation.
What Orbital MRI Assesses
The orbit contains the globe (cornea, lens, vitreous body, ocular layers), optic nerve, extraocular muscles, lacrimal gland, vessels, and surrounding fat tissue. MRI allows detailed assessment of their structure, size, and potential abnormalities.
Indications
- visual loss or visual field defects;
- suspected optic nerve pathology;
- orbital pain or pressure sensation;
- proptosis (eye protrusion);
- orbital trauma;
- suspected mass lesion;
- inflammatory conditions;
- treatment monitoring.
Conditions Detected by MRI
- orbital and optic nerve tumors;
- inflammatory or demyelinating optic neuropathies;
- hemorrhage;
- aneurysms and vascular malformations;
- venous thrombosis;
- extraocular muscle atrophy;
- vascular flow disturbances;
- foreign bodies and their localization.
Orbital MRI is often performed in conjunction with brain MRI to provide comprehensive evaluation of the visual pathways and adjacent anatomical structures.