[header] How to diagnose canine eye infections [title] Regularly inspect your dog's eyes. [step] While we may take the time to check our dog's body for changes while we brush or groom it, its important to look in its eyes for changes as well. Pay attention to any redness or puffiness and keep an eye on these changes to make sure they go away quickly. 
[substeps] Just like humans, dogs can have allergic reactions to things in the environment. Just because a dog's eyes are red doesn't mean it has an eye infection.