Writing a text has often been compared to marriage as it engenders an obligation to keep the covenant intact short of death. When contemplating another edition of the text Ophthalmic Disease in Veterinary Medicine, my considerations were how to improve the book as well as updating the text. Updating the information is quite straightforward, while changing the format is more challenging and risky. Previous editions were essentially single authored, which has the advantage of more consistency between chapters in writing style and philosophy, but it also has the disadvantage of limiting the expression of clinical experience to a single author. For this edition, we have chosen to increase the breadth of clinical expertise with a diverse group of authors from many geographic regions of training and practice and who have actively participated in student training and research in veterinary ophthalmology. They have also demonstrated not only great professional skills but a great deal of patience as the timeline for fruition of publication has been greatly extended from the original target date. I would like to thank all the authors for their participation and thoroughness, and we hope that the readers will appreciate the expertise that this diversity has brought to the text.