This ophthalmology textbook is for health professionals involved in the routine care of eye disease patients such as ophthalmologists (Eye MDs), optometrists, and others completing written and oral board exams, providing rapid, succinct, convenient indexed information on current concepts of eye disease therapy (e.g., clinical pearls, etiology, differential diagnosis, diagnostic work-up, and treatment summaries), ophthalmic drug names, dosages, dosing frequency information, and drug classification information for eye care specialists, family practitioners, ear, nose, and throat specialists, and other medical sub-specialties. Concise information on potential side effects and drug interactions with systemic medications used for systemic diseases, and “Clinical Pearls” and “Treatment Summaries” are found throughout the textbook. A quick reference list for "common eye conditions and diseases," a table of contents, and a comprehensive alphabetical index provide instant access to eye disease treatment summaries, clinical diagnostic pearls, disease-specific workups, differential diagnosis, ophthalmic drug dosing/frequency, and medication interactions and contraindications. This textbook is a “one-reference, go-to” eye disease therapy summary for professional board examinations and a safety guide for daily clinical practice, whose content is comprehensive yet concise and attainable in a glance due to its unique new multi-layered cross-referencing format and accurate eye disease diagnosis and therapy descriptions, drug dosing information, and other diagnostic and therapeutic protocols by ophthalmologic sub-specialty, anatomic location, disease category, drug name (trade or generic), the appropriate routes/sites of medication delivery to the body (topical, oral, IV, SCJ, ITV), the mechanism of action of drugs, potential drug interactions, side effects (adverse effects), contraindications for medications being considered for patients with distinct ages and health conditions.