Blues are beautiful, but if your dog's eyes suddenly appear hazy or cloudy, have them checked for cataracts or glaucoma by your veterinarian.
Glaucoma is a disorder in which fluid builds up in the eye and produces pressure. When too much or too little fluid is produced or drained, the pressure inside the eye, known as intraocular pressure (IOP), rises, causing damage to the retina and optic nerve. Glaucoma can eventually result in blindness.
A cataract is a cloudiness in the crystalline lens of the eye that develops over time. Cataracts in dogs can be as small as a dot or as large as the entire lens. When a cataract develops, the opaque lens prevents an image from forming on the retina, causing vision loss. It's possible that light will travel through the lens, allowing your pet to see light and dark.
Cataracts are more frequent in older dogs, but whether a dog develops cataracts is largely determined by heredity. Some breeds are more prone to developing cataracts. Boston Terriers, Cocker Spaniels, Siberian Huskies, Miniature Poodles, Border Collies, and Great Danes can all develop cataracts as early as one year of age.