The book Cornea and External Disease: Diagnosis and Management serves as a comprehensive and authoritative guide to the understanding, diagnosis, and treatment of disorders affecting the cornea and ocular surface. Designed for ophthalmologists, residents, optometrists, and vision scientists, it integrates fundamental scientific principles with practical clinical approaches, offering a complete view of corneal pathology and management strategies. The text delves deeply into the anatomy, physiology, and biochemistry of the cornea and adjacent structures, providing the foundational knowledge necessary to appreciate the complex mechanisms underlying ocular surface health and disease. From common conditions such as dry eye and infectious keratitis to advanced topics including immunologic, degenerative, and neurotrophic disorders, the book combines detailed descriptions with evidence-based clinical guidance to enhance diagnostic accuracy and therapeutic outcomes.

A hallmark of this volume is its emphasis on modern diagnostic technologies and their clinical applications. Advances such as in vivo confocal microscopy, anterior segment optical coherence tomography, corneal topography, and molecular diagnostic techniques are thoroughly explored to illustrate their role in the early detection and monitoring of disease progression. The book highlights how these tools, when integrated into clinical practice, allow for precise differentiation between infectious, inflammatory, degenerative, and traumatic etiologies, enabling timely intervention and improved visual prognosis. Additionally, it discusses the evolving understanding of corneal biomechanics and nerve function, which has transformed both the assessment and management of ectatic and neurotrophic corneal disorders.

The book also explores the growing importance of ocular surface immunology and systemic disease correlations, recognizing that many corneal pathologies reflect underlying systemic conditions such as autoimmune disorders, collagen vascular diseases, and metabolic syndromes. It emphasizes the value of a multidisciplinary approach, where ophthalmologists collaborate with rheumatologists, immunologists, and infectious disease specialists to ensure comprehensive patient care. Chapters on immune-mediated keratitis, peripheral ulcerative keratitis, and ocular manifestations of systemic diseases provide insight into the interconnected nature of ocular and systemic health.