👉 The kery fluid, also known as keratohymatin, is a unique and complex extracellular matrix protein found predominantly in the corneal epithelium of certain bird species, particularly those with high visual acuity such as birds of prey and swifts. This fluid plays a crucial role in maintaining the structural integrity and resilience of the cornea, providing it with elasticity and resistance to mechanical stress. It is rich in proteoglycans and other glycoproteins, which contribute to its viscoelastic properties, allowing the cornea to bend light effectively for sharp vision. The kery fluid also participates in wound healing processes, aiding in the regeneration and repair of damaged corneal tissues. Its composition is distinct from other extracellular matrix components, making it a key player in the unique optical and mechanical properties of avian corneas.
