Glaucoma  

Glaucoma: within the eye there is a fluid that is called "aqueous humor".  The aqueous humor is normally maintained at a pressure of approximately 15 to 30 mm mercury in the dog.  It is imperative that the pressure is constant to maintain the normal shape and firmness of the eyeball.  Aqueous humor is produced by a part of the eye called the epithelium of the ciliary processes.  It was established in 1979 by Van Buskirk, that the aqueous humor flows into the posterior chamber, through the pupil into the anterior chamber and peripherally to the spaces of the iridocorneal angle. Here it is resorbed into the bloodsteam by the scleral venous plexus.  If this flow is blocked in any way pressure increases and results in glaucoma.

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