X-ray
- Basically replaced by CT

CT
- Better than X-ray for excluding foreign bodies
- Trauma
- To assess bone destruction and sclerosis with tumors

MRI
- Tumors
- Infections
- Optic neuritis, combined with MRI of the brain
- Thyrotoxicosis (Graves’ disease)
- Diplopia, examination of eye muscles
- Loss of vision, combined with MRI of the brain
- NB: must NOT be used with suspected foreign bodies
- Failing field of vision, combined with MRI of the brain