Rapid advances in the field of oncology have made the diagnosis and treatment of intraocular tumors more and more complex, therefore requiring equally advanced training and expertise. Early detection and specialized care can have a profound impact on the final outcome, so it is crucial to manage them appropriately. In this 7th volume of the 'ESASO Course Series', the focus is on ocular tumors, including diagnosis and management. With a strong emphasis on diagnostic aspects, chapters cover and illustrate a variety of intraocular tumors, such as retinoblastoma and uveal melanoma, encountered in children and adults. This book includes contributions by renowned experts from Europe and the United States. It is a valuable resource for primary care ophthalmologists as well as residents and fellows in the field of ophthalmology.