What is the most common cause of conjunctivitis in animals?

The most common cause of conjunctivitis in animals is related to air irritants. Conjunctivitis, which is the inflammation of the conjunctiva, can be triggered by various environmental factors. Airborne irritants such as dust, smoke, and chemical vapors can lead to irritation of the eyes, resulting in conjunctivitis. This is particularly relevant in environments where animals may be exposed to high levels of these irritants, such as in poorly ventilated facilities or areas with strong odors.

While fungal infections, nutrition deficiencies, and genetic predisposition can contribute to eye issues, they are not as prevalent as air irritants when it comes to conjunctivitis specifically. Fungal infections are less common and typically not the primary concern for conjunctivitis, especially in the general population of animals. Nutrition deficiencies might influence overall health and could potentially affect the eyes but are not direct causes of conjunctivitis. Genetic predisposition may lead to certain conditions that affect the eyes, but again, it does not represent the most common cause of conjunctivitis. Thus, identifying air irritants as a leading cause allows for the implementation of preventive measures to improve animal welfare in terms of eye health.