Corneal Dystrophy is a rare disorder that affects the layers of the cornea.
The cornea is the clear front layer of the eyeball.

The opacities are usually round or oval in shape,
and may affect any or all of the five layers of the eyeball.
They may begin at a young age or appear with advanced age.

Breeds affected:
Airedale, Afghan Hound, American Cocker, Basenji, Beagle,
Bearded Collie, Bichon Frise, Boston, Boxer, Briard, Cavalier
King Charles Spaniel, Chihuahua, Chow Chow, Dachshund,
English Springer Spaniel, German Shepherd Dog, Golden Retriever,
Irish Wolfhound, Labrador Retriever, Miniature Pinscher, Nova Scotia
Duck Tolling Retriever, Pembroke Welsh Corgi, Rough Collie, Samoyed,
Shetland Sheepdog, Siberian Huskey and Vizsla.

Inheritance

Corneal dystrophy is inherited, and should not be confused
with corneal degeneration which is not inherited.  Inheritance
varies among breeds. It may be recessive or dominant.  As with
any inherited disease, screening and eliminating known carriers is
important to eliminate or reduce the occurrence of a disease.
Corneal Dystrophy