Ocular Melanosis in Cairn Terriers
Ocular Melanosis in Cairn Terriers
Ocular Melanosis is an eye condition that most commonly affects Cairn Terriers, though it has been reported occasionally in other breeds such as the Boxer. It is also called Pigmentary Glaucoma because this condition often results in glaucoma.
What's really going on
Ocular Melanosis is inherited, although the specific genes and mode of inheritance are not completely understood. The condition causes pigmented (brown) cells to accumulate in the eye and eventually block the drains that are responsible for removing fluid from the eye. These clogged drains will cause the pressure inside the eye to increase. The high pressure in the eye will damage the retina and the optic nerve. Dark pigment may also be deposited on the sclera (white part of the eye).
How a specialist helps
Unfortunately, despite ongoing research, there is currently no cure for this condition. Treatment is aimed at controlling inflammation with topical anti-inflammatory medications. Dogs with Ocular Melanosis typically require routine eye exams and intraocular pressure monitoring. If intraocular pressures start to increase, anti-glaucoma medications can be initiated to decrease the pressure. In the event that glaucoma is no longer responsive to therapy, alternative surgeries such as eye removal may be necessary to ensure long-term comfort.