KBC 2022| Which of these disease or conditions is not primarily related to the eyes? By Ishani Santuka - December 22, 2022 Amitabh Bachchan, KBC. (Representative Image) KBC 2022| Choose the correct option Question: Which of these disease or conditions is not primarily related to the eyes? Conjunctivitis Myopia Cataract Diphtheria Ans: Diphtheria