This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
Cogan's syndrome is associated with? 
Select and explain. 
A. Keratitis, B. Conjunctivitis, C. Iritis, D. Myopia
A: Keratitis
Answer: A: Keratitis 
Explanation: Cogan's syndrome is seen in middle aged adults. The features include interstitial keratitis, acute tinnitus, veigo and deafness. Treatment is by usage of topical and systemic coicosteroids. Early treatment is necessary to prevent permanent deafness and blindness. Ref: Comprehensive Ophthalmology, A. K. Khurana, 7th edition, p114.