The Depth Perception Team is BACKK with Dr. Kimberly Castillo. Dr. Castillo shares her journey from a filmmaking background to becoming a prominent figure in optometry education. She discusses the motivation behind her widely-used study guide "The Castillo Book" as many of us call it, the challenges she faced in her own exam preparation, and the impact her book has had on students. Dr. Castillo also reflects on her entrepreneurial journey, the importance of feedback from students and medical providers, and her plans for future projects, including a new book for part one of the NBEO optometry exam.