Ocular trauma is readily investigated by ultrasound, which is of particular value when the light conducting media are opacified by haemorrhage or other injury. In this situation, direct visualization of the ocular contents by ophthalmoscopy is difficult or impossible. Severe complications are treated by microsurgical techniques, and ultrasound evaluation represents the only practicable method of examination for surgical planning. This review illustrates the grey-scale (B scan or two-dimensional) features of the traumatized eye and describes the examination technique.