Objective    To observe the structure and quantity of choroidal vessels in the injuried eyes caused by projectiles in rabbits.      Methods    The experimental retinal injury caused by intraocular foreign body was made by nail gun. We used HE staining to examine the pathological changes of choroid of the eyes enucleated on day 1 and 3

and in 1st

2nd and 4th week after trauma. The choroid volume (Vc)

blood vessel density of choroid (Vv) and blood vessel volume of choroid (Vb) were measured by stereological methods.     Results    Compared with normal choroid

the Vc

Vv and Vb of traumatic eyes were all significantly reduced

among which the Vv and Vb reached the lowest value on day 3 after trauma and recovered gradually. The Vb rose to a stable level at 4th week after trauma

about 55.99% of the normal value. The Vc got smaller than that of normal control

but showed no significant changes among different time points.      Conclusion    The morphologic changes of choroid in the injuried eyes caused by projectiles lead to reduced choroidal blood supply

which may be one of the factors influencing the vision function after trauma.