Brush Edge

The brush border, or brush border, is an area of ​​the cornea characterized by the presence of a formed multilayer border of normally functioning, fairly densely located epithelial and stromal cells. It has been shown that the brush border is not identical to the corneal epithelium. However, the transition between them is continuous, and the difference in the cellular composition of the brush border and the areas immediately adjacent to it is only up to 20%. The function of the brush border is to retain corneodesmosomes in the limbus area, which “glue” the epidermis of the eyelids and the separating layer of the papillary epidermis. This is especially important when a foreign body enters the limbus area, which constantly irritates the cornea when blinking. In particular, for this reason, brush borders in the English literature are usually called any natural or extended polymers that imitate those of eyelashes, moving, distributing and scattering light at the level of the papillary zone of the iris.