The thick, fibrous, outer layer of the meninges of the optic nerve which fuses with the sclera at the point the optic nerve enters the eye; although it can separate to form the dural sinuses. It is composed of durable connective tissue.
The thick, fibrous, outer layer of the meninges of the optic nerve which fuses with the sclera at the point the optic nerve enters the eye; although it can separate to form the dural sinuses. It is composed of durable connective tissue.