The lateral orbital rim is normally at the level of the equator of the globe. [48] Blood vessels and nerves gain access to the orbit via foramina in the orbital bones ( Table 2 ).

Orbital volume is approximately 35 cc, of which only 7 cc (20%) is occupied by the eyeball. The remaining 28 cc contains muscles, nerves, fat, glands and blood vessels. [19, 20] The orbit can thus ...