Tenon's capsule
（重定向自Bulbar sheath）
The fascia bulbi (also known as the capsule of Tenon and the bulbar sheath) is a thin membrane which envelops the eyeball from the optic nerve to the limbus, separating it from the orbital fat and forming a socket in which it moves.
Its inner surface is smooth, and is separated from the outer surface of the sclera by the periscleral lymph space.