Glaucoma is one of the disorders that can affect dogs and cats without any visible signs. As with bloat, the fact that your pet is suffering is often not apparent until the situation is critical. At least glaucoma, unlike bloat, will not kill your dog or cat. Unfortunately, as with epilepsy, even if glaucoma is diagnosed in your cat or dog, there may not be much that can be done. Glaucoma in animals is not as readily treatable as it is in humans.