Keratoconjunctivitis in Cockatiels

Keratoconjunctivitis is inflammation affecting both the conjunctiva (the soft tissue around the eye) and the cornea (the clear front surface of the eye). In cockatiels, it often shows up as redness, squinting, swelling around the eyelids, discharge, or rubbing at the face. Because birds rely heavily on vision for eating, climbing, and feeling safe, even a mild eye problem can quickly affect daily life.

This condition is not one single disease. It is a visible eye problem with several possible causes, including infection, irritation, trauma, and nutritional disease. In psittacine birds such as cockatiels, low vitamin A intake is a well-known risk factor because it can damage the tissues lining the eyes, sinuses, and mouth and make secondary infection more likely.

Some cockatiels have only surface irritation, while others develop deeper corneal involvement that is more painful and more urgent. That is why eye discharge should never be treated as a cosmetic issue. Your vet needs to determine whether the problem is limited to the conjunctiva or whether the cornea is also affected.

Several problems can lead to keratoconjunctivitis in cockatiels. Infectious causes include bacteria such as Chlamydia psittaci, Mycoplasma species, Staphylococcus, and other opportunistic organisms. Viral, fungal, and parasitic causes are less common but are also possible in birds with eye inflammation. In cockatiels, chlamydiosis matters because this species is considered one of the more commonly affected pet birds, and eye signs may occur along with respiratory or whole-body illness.

Noninfectious causes are also important. Dusty bedding, aerosol sprays, smoke, cooking fumes, poor ventilation, and direct trauma can all irritate the eye. A scratch from a cage mate, toy, or perch can damage the cornea and allow secondary infection to develop. Foreign material trapped around the eye can do the same.

Diet is a major piece of the puzzle in many pet cockatiels. Birds eating mostly seed diets are at risk for vitamin A deficiency, which can damage epithelial tissues and contribute to swollen eyes, nasal discharge, and secondary infections. This does not mean every red eye is nutritional, but it is common enough that your vet will usually ask detailed questions about diet, pellets, vegetables, and supplements.

Sometimes the eye problem is only part of a larger issue, such as sinus disease, poor husbandry, chronic stress, or another systemic illness. That is why treatment works best when your vet addresses both the eye itself and the reason it became inflamed in the first place.

Your vet will start with a careful history and physical exam. Expect questions about diet, recent cleaning products or fumes, cage setup, new birds in the home, trauma risk, discharge from the nose, appetite, droppings, and energy level. Bringing photos of the cage and a list of foods your cockatiel actually eats can be very helpful.

The eye exam may include close inspection of the eyelids, conjunctiva, cornea, and surrounding tissues. Your vet may use an ophthalmic stain to look for a corneal ulcer or scratch, and may collect samples for cytology or bacterial culture if discharge is significant or the case is not responding as expected. If infection or systemic illness is suspected, your vet may also recommend bloodwork and targeted testing for diseases such as chlamydiosis.

In some birds, imaging or a more advanced avian ophthalmic workup is needed, especially if swelling is severe, the eye appears cloudy, or there are signs of sinus involvement. Sedation is sometimes recommended for a safer, more complete exam. The goal is not only to confirm keratoconjunctivitis, but to identify the underlying cause so treatment can be matched to your bird's needs.

Prevention starts with husbandry and diet. Feed a balanced cockatiel diet built around a quality pellet or another complete diet your vet recommends, with appropriate vegetables and other foods to support vitamin A intake. Seed-heavy diets are a common setup for deficiency in psittacine birds, so gradual diet improvement can make a real difference over time.

Keep the environment gentle on the eyes. Avoid cigarette smoke, aerosol sprays, scented cleaners, candles, nonstick pan fumes, and dusty substrates. Maintain good ventilation, clean perches and food dishes regularly, and watch for toys or cage hardware that could scratch the face or eye. If you add a new bird, quarantine and have your vet guide safe introduction practices, since some infectious causes can spread.

Routine wellness visits matter too. Birds often hide early illness, and subtle eye or sinus changes may be easier for your vet to spot before they become severe. If your cockatiel develops even mild recurring redness, discharge, or rubbing, schedule an exam early rather than waiting for the eye to worsen.