Glaucoma

A

Aqueous Humor:
The watery fluid that fills the chambers at the front of the eye. This fluid is produced by the ciliary body.

C

Canal of Schlemm:
A circular canal between the cornea and the iris. This canal provides an exit for the aqueous humor from the eye into the bloodstream.

Choroid:
A vascular membrane that covers the eye between the retina and the sclera.

Ciliary Body:
The thickened part of the vascular portion of the eye that lies between the iris and the choroid. It is responsible for producing the aqueous humor that circulates in the chambers of the eye.

Cornea:
The transparent anterior portion of the outer layer of the eye wall. The cornea is the principle refractory structure in the eye.

  
I

Iris:
The colored muscular portion of the eye that surrounds the pupil and regulates its size.

  
L

Lens:
A transparent structure that lies between the iris and the vitreous humor. The lens is responsible for converging or diverging light.

  
O

Optic Disk:
The region in the retina of the eye where nerve fibres leave to become part of the optic nerve. It is also called the blind spot, because it is not sensitive to light.

Optic Nerve:
The nerve that carries visual information from the eye to the brain.

  
P

Pupil:
The opening in the iris through which light enters the eye.

  
R

Retina:
The innermost layer of the eye wall that contains the structures that receive and transmit visual information.

  
S

Sclera:
The white membrane that forms the outer layer of the eyeball.

  
T

Trabecular Meshwork:
A network of fibres that is responsible for draining the aqueous humor from the eye.

  
V

Vitreous Humor:
The viscous substance that occupies the posterior compartment or cavity at the back of the eye.