If your pet doesn't even glance at the cotton ball, after trying this a few times, he may be having trouble seeing. If your pet has started showing signs of diminished eyesight, take him immediately to see a veterinarian. Some signs indicative of diminished eyesight can be a dog who becomes reluctant to go up or down steps and a cat who doesn't jump on the furniture as much as he use too. Moving your furniture can confuse a pet with poor eyesight. Keep food and water dishes, litter boxes, and beds in the same place to provide a sense of order and security.
Pets are more comfortable and content when life stays in order.
Keep your pet on a leash when you go outside. Poor-sighted pets can unknowingly walk into traffic and bang into unfamiliar objects. Keep poor-sighted pets safely barred from swimming areas. Swimming pools can be big trouble for a pet with poor eyesight. Sometimes a pet with good vision will help a pet with poor sight.