A 24-year-old woman with a 10-year history of intermittent episodes of redness and photophobia in both eyes presented to the ophthalmology clinic. On examination, the visual acuity was 20/30 in the right eye and 20/25 in the left eye. Slit-lamp examination revealed conjunctival hyperemia and peripheral corneal opacification, with inflammation and crystalline deposits on the corneal stroma consistent with interstitial keratitis. Six months later, the patient reported having vertigo, tinnitus, and hearing loss. What is the diagnosis?