Pinkeye in cattle spreads quickly and can turn from a small issue into a problem for the whole herd. It moves from animal to animal through direct contact and flies, especially face flies. That’s why it’s important to spot it early and act fast. What begins as mild tearing or irritation can lead to cloudy eyes, ulcers, or even blindness if not treated right away. Once pinkeye takes hold, it’s much tougher and takes more time to control, so catching it early is your best bet.Pinkeye in cattle usually follows a seasonal pattern. It starts showing up in spring, gets worse in early summer, and peaks when it’s hot and dry. Dust, tall grass, and lots of flies make things worse. Breeds with lighter-colored eyes, like Herefords and Charolais, are more at risk because they’re sensitive to sunlight and irritation. These conditions make infection more likely, so prevention is important.
When pinkeye shows up, treating it can take a lot of work. You’ll need to sort, treat, and keep an eye on sick animals. Even mild cases can get worse if ignored, so separating infected cattle helps stop it from spreading. The main point is this: the sooner you spot and deal with pinkeye, the easier it is to manage. In the next sections, we’ll cover how to prevent outbreaks, what signs to look for, and how to handle pinkeye before it affects your herd’s health and your bottom line.