Thomas Campbell with his wife, Pamela Campbell. On Dec. 18, 2023, the world went silent for Thomas Campbell. The active and vibrant 70-year-old lost his hearing in his left ear when he was 33 years old. And without much warning, on that December day, his hearing went out in his right ear, leaving him completely unable to hear. When other medical centers couldn’t help, Thomas turned to Mayo Clinic for answers. Dr. Nicholas Deep, a Mayo Clinic otolaryngologist,…