|
Old Dog Resources
|
|
Cataract Surgery for Pets
It is now possible for pets to have surgery for cataracts. Dogs and cats that
otherwise would be blind can be given their sight back. Cataract surgery in dogs
and cats is performed in the same manner as cataract surgery in people. The most
common technique is called phacoemulsification. The hard lens is broken up into
tiny bits with a high frequency ultrasonic probe and then removed from the eye.
Contrary to popular belief, cataracts are not removed by laser. Lasers are used
to remove lens capsule opacities that may form months or years after cataract
surgery. The surgery has the best prognosis when the procedure is performed in
the early stages of cataract progression.
A cataract by definition is opacity (cloudiness) of the lens. A cataract may
involve all or only part of the lens tissue. The normally transparent lens
serves to focus beams of light onto the retina so that your pet can see clearly.
If the opacity becomes dense enough, vision will be lost. In dogs, most
cataracts are thought to be of an inherited nature.
Progressive cataracts commonly occur in Miniature Poodles, American Cocker
Spaniels and Miniature Schnauzers. Other causes include old age, low blood
calcium, high blood sugar, toxins, nutritional deficiency, and radiation. In
cats, Persians, Birmans, and Himalayan breeds are most commonly affected.
Once the affected lens has been removed, clearing the way for light to once
again reach the retina, a plastic or acrylic prosthetic lens is implanted to
replace the lens. This allows for more focused vision.
Referral to a veterinary ophthalmologist for cataract surgery is normally done.
These professionals have undertaken advanced training in diseases of the eye,
and, when registered, are referred to as board certified ophthalmology
specialists. They are able to take referrals for difficult eye conditions or
sensitive surgery such as cataract removal. For a referral to a board certified
veterinary ophthalmologist, talk to you local veterinarian.
Reprinted with permission from www.animalhealthcare.ca
|
|
|
