Disorder - Cataract

Organ Systems Involved
Nervous/sensory

Brief Description
    Cataracts are abnormal lesions on one or both eyes, which results in a reduction of vision, even to the extent of being blind.

Presenting Signs
    The main sign of cataracts is opacity of the lens of the eye. Affected dogs progressively lose their eyesight and are less able to detect motion. Cataracts are classified according to their location on the lens, their size, shape and appearance. The most common is the 'nuclear cataract' located in the centre of the lens. 'Anterior cataract' or 'anterior cortical cataract' is located on the front of the eye. 'Posterior cataract'/ 'posterior cortical cataract' is on the inner side of the eye and 'equatorial cataract'/ 'equatorial cortical cataract' on the periphery (edge) of the eye. Over time cataracts cannot change in location but may grow in size from small ('punctate') to larger ('intermediate').

Groups Affected
Gundog
Hound
Non Sporting
Terrier
Toy
Utility
Working dog


Breeds Affected
Afghan hound
Alaskan malamute
American cocker spaniel
American Staffordshire terrier
American water spaniel
Australian cattle dog
Australian shepherd
Australian silky terrier
Beagle
Bearded collie
Bedlington terrier
Belgian Shepherd Dog (Laekenois and Groenendael)
Belgian Shepherd Dog (Tervueren)
Bernese mountain dog
Bichon frise
Border terrier
Borzoi
Boston terrier
Bouvier de Flandres
Boxer
Briard
British bulldog
Brittany
Cairn terrier
Cavalier King Charles spaniel
Chesapeake Bay retriever
Chow chow
Cocker spaniel
Collie (Rough and Smooth)
Curly-coated retriever
Dachshund (long, smooth and wire haired)
Dachshund (miniature - long, smooth and wire-haired)
Dandie Dinmont terrier
Deerhound
Dobermann
English pointer
English setter
English springer spaniel
English Toy terrier (Black and Tan)
Field spaniel
Flat-coated retriever
Fox terrier (Smooth)
Fox terrier (Wire)
French bulldog
German shepherd dog
German short-haired pointer
German wire-haired pointer
Golden retriever
Gordon setter
Great Dane
Greyhound
Griffon Bruxellois
Havanese
Hungarian vizsla
Ibizan hound
Irish setter
Irish water spaniel
Irish wolfhound
Italian greyhound
Japanese chin
Keeshond
Kerry blue terrier
King Charles spaniel
Komondor
Kuvasz
Labrador retriever
Lakeland terrier
Lhasa Apso
Manchester terrier
Miniature pinscher
Neapolitan mastiff
Newfoundland
Norwegian elkhound
Nova Scotia duck tolling retriever
Old English sheepdog
Papillon
Pekingese
Pomeranian
Poodle (Miniature)
Poodle (Standard)
Poodle (Toy)
Portuguese water dog
Puli
Pyrenean mountain dog
Rhodesian ridgeback
Rottweiler
Saluki
Samoyed
Schipperke
Schnauzer (Giant)
Schnauzer (miniature)
Schnauzer (Standard)
Scottish terrier
Sealyham terrier
Shetland sheepdog
Shih Tzu
Siberian husky
Soft-coated wheaten terrier
St Bernard
Sussex spaniel
Tibetan terrier
Welsh Corgi (Pembroke)
Welsh springer spaniel
Welsh terrier
West Highland white terrier
Whippet
Yorkshire terrier


Treatment
    Surgical

Related Disorders
    Diabetes Mellitus
    Hypocalcaemia
    Lens luxation
    Uveitis.

PubMed References
Cataract

Further Reference Material [OMIA Number]
168


Contributor
Sarah Gardner