What is the typical location for ectopic cilia to emerge from?

Ectopic cilia are abnormal cilia that grow from the conjunctival or palpebral margins, and they typically emerge from the upper eyelid margin. The most common location for ectopic cilia to develop is the 12 o'clock position of the eyelid, which is the area directly above the central cornea.

The presence of ectopic cilia at this location can lead to contact with the cornea, resulting in irritation, inflammation, or even corneal ulceration. Understanding this typical location is crucial for veterinary ophthalmologists when diagnosing and planning treatment for affected animals.

Other locations, such as the 6 o'clock, 3 o'clock, or 9 o'clock positions, are not typical for ectopic cilia. In these positions, while other eye abnormalities may occur, the characteristic development of ectopic cilia with the associated complications primarily occurs at the 12 o'clock position. Recognizing this pattern assists practitioners in efficiently identifying and addressing the condition in patients.