Corneal sequestration occurs predominantly in cats and consists of the appearance of a portion of necrotic (unhealthy) cornea. This disease can affect any cat, although it is more common in Himalayan or Persian cats.
Clinically, it is characterized by the presence of a dark-colored plaque, often associated with corneal ulcers, in one or both eyes.
The definitive cause of this eye disease remains unknown, although chronic corneal irritation, herpesvirus infection, eyelid changes and keratoconjunctivitis sicca may contribute to its appearance.
Treatment consists of surgical removal of the sequestrum using a technique denominated keratectomy, and subsequent reconstruction of this area with amniotic membrane, which allows the cornea to remain transparent.
Corneal sequestration occurs predominantly in cats and consists of the appearance of a portion of necrotic cornea, secondary to corneal stromal degeneration. This disease can affect any cat, although it is more common in Himalayan or Persian cats.
Clinically, it is characterized by the presence of an amber to black plaque, the size of which can vary between 1-2 mm in diameter, up to occupying half of the corneal area. Corneal sequestrations are often associated with corneal ulcers and can occur in one or both eyes.
The definitive cause of this eye disease remains unknown, although chronic corneal irritation caused by trichiasis or entropion, herpesvirus infection and keratoconjunctivitis sicca may contribute to its appearance.
The treatment of corneal sequestration consists of its surgical removal using a technique denominated keratectomy, and subsequent reconstruction of this area with an amniotic membrane, which allows the cornea to remain transparent. Although less frequent, cases of superficial corneal sequestration may not require corneal reconstruction, although it is necessary to protect the ocular surface during the recovery process to avoid recurrences. For this reason, these clinical cases must be referred to an Ophthalmologist, to determine and carry out the most appropriate treatment.