Based on material from the Advanced Retinal Imaging Center of The New York Eye and Ear Infirmary, this video atlas is a dynamic presentation of various ophthalmic and orbital entities encountered in the clinical setting. “Dynamic Ophthalmic Ultrasonography” is designed for quick reference in clinics performing ultrasound of the eye. For the first time in ophthalmic literature, this book dynamically presents the basic ultrasound movements observed in the eye and orbit. It shows the usual movement of a particular tissue and the possible types of motion it could manifest in various pathologic situations. A companion Website shows 180 B-scan ultrasound videos of typical and atypical ophthalmic tissue movements observed in various eye conditions in actual clinical cases. By watching the videos, the viewer becomes familiar with how ophthalmic tissues behave and can recognize which specific anatomic structures are involved when confronted with a similar case. This understanding of the intricacies of ophthalmic tissue dynamics enables the clinician to interpret ultrasound findings in a logical manner. Several cases are included to test the reader.