Isolated Idiopathic Inferior Rectus Myositis: Taming a Rare Disease at a Rare Site

The authors report a case of a 66-year-old man with sudden-onset diplopia and redness in the left eye. The examination revealed left hypotropia with exotropia and limited elevation. Contrast-enhanced computed tomography and histopathology suggested inferior rectus myositis with fibrosis. The patient was treated with steroid pulse therapy, followed by slow tapering. Later, the patient underwent surgical strabismus correction. He remained diplopia-free with an excellent cosmetic outcome and minimal elevation deficit 12 months postoperatively. [.