Why Does a Cat Have a Yellow and White Eye Discharge?

A cat's eyes are not really a window to its soul, but a window to its health. The cat's eyes should be clear and devoid of discharge. They should also be open, not partially closed, according to CatHealthIssues.net. Discharge from the eyes is not uncommon in cats, especially when they first awaken. "Sleep crust" found in the corner of the eye in the morning is not serious and can easily be wiped away with a wet towel. Other more serious forms of eye discharge may be caused from a variety of disorders that should be treated by a veterinarian.

  1. Eye Discharge

    • Discharge can appear in many different forms: watery, bloody, gray and ropy (mucoid) or yellow or green and thick (mucopurulent). According to PetPlace.com, discharge in varying shades of yellow usually results from infection. The more discharge produced, the greater the infection. It is typical for eyelids to become encrusted with discharge as well if the condition continues or worsens. Eye infections are common in cats, but it is often difficult to know what the underlying condition is without seeking veterinary assistance.

    Deformities

    • Deformities are often to blame for eye discharge. A deformity can be a birth defect or a condition that arises as the cat ages. An obstruction of the tear duct may cause eye discharge because the tears cannot drain properly. Eyelashes that rub along the cornea can also cause infections. Anterior uveitis is an inflammation of the iris and can be responsible for eye discharge. The lens can also become dislocated, resulting in prolonged infection.

    Wounds

    • Outdoor cats are especially prone to running into brush that could cause eye lacerations. It is not uncommon for cats to get things in their eyes or to scratch their eyes during grooming. Foreign material in the tear ducts will produce large amounts of eye discharge. Ulcers or lacerations in or around the eye can cause infection. Even trauma to the nose, cheeks, mouth or surrounding tissue can become infected and spread to the eyes. Abscesses of the teeth and gums can also be manifest in eye discharge.

    Chronic Problems

    • Serious disorders and chronic conditions can have side effects like yellowed eye discharge. Glaucoma is a serious eye disorder which results when too much pressure remains in the eye. Often the first sign to pet owners is an eye discharge. Eye tumors from underlying cancers can cause excessive eye discharge, and allergies to the pet's environment can easily result in eye infections. Keratoconjunctivitis sicca can occur in older cats that have lost the ability to produce enough tears, resulting in chronic dry eye.

    Treatment

    • Cleaning away the discharge with a warm, moist cloth can help improve the pet's comfort and vision until they can be treated by a vet. It is important to prevent the cat from scratching or excessively rubbing their eyes, according to PetPlace.com. Often vets will treat with anti-inflammatory drugs for allergy symptoms or with antibiotics or eye ointments for infections.