Why does a cat's eyelid fall out? - briefly
A cat's eyelid may fall out due to trauma, infection, or a condition called cherry eye, where the gland of the third eyelid prolapses. Immediate veterinary attention is essential to prevent complications.
Why does a cat's eyelid fall out? - in detail
A cat's eyelid falling out, medically referred to as eyelid prolapse or third eyelid protrusion, is a condition that can occur due to various underlying causes. The third eyelid, or nictitating membrane, is a thin, protective layer located in the inner corner of a cat's eye. Normally, it remains tucked away and is only partially visible. However, when it becomes prominently exposed, it often indicates an issue that requires attention.
One common cause is eye irritation or injury. Foreign objects, scratches, or infections can lead to inflammation, prompting the third eyelid to protrude as a protective response. Conjunctivitis, a condition characterized by inflammation of the conjunctiva, can also trigger this reaction. Additionally, feline herpesvirus, a prevalent infection in cats, may cause ocular symptoms, including third eyelid protrusion.
Systemic health issues can also lead to this condition. Dehydration, fever, or general weakness may cause the third eyelid to become more visible as the body's resources are diverted to address the primary problem. Gastrointestinal disorders, such as diarrhea or vomiting, can contribute to dehydration and subsequent eyelid protrusion.
Neurological conditions are another potential cause. Damage to the nerves controlling the eye muscles or the third eyelid itself can result in its abnormal positioning. Horner's syndrome, a neurological disorder affecting the eye and surrounding muscles, often manifests with third eyelid protrusion, along with other symptoms like a drooping eyelid or constricted pupil.
In some cases, the protrusion may be linked to anatomical abnormalities or genetic predispositions. Certain breeds may be more prone to issues with the third eyelid due to their unique eye structure.
If a cat's eyelid appears to have fallen out, it is crucial to seek veterinary care promptly. A thorough examination will help identify the root cause, whether it is an infection, injury, systemic illness, or neurological issue. Treatment will depend on the underlying condition and may include medications, eye drops, or, in rare cases, surgical intervention. Early diagnosis and management are essential to prevent complications and ensure the cat's eye health is restored.