The term 'eye feature' can refer to two different features of the eye: the uvea and the LASH. The uvea is the middle layer of the eye, which consists of the iris, ciliary body, and choroid. It is responsible for controlling the amount of light that enters the eye and helps to focus the light on the retina. The LASH is the long, curved hair that grows at the edge of the eyelid. It helps to protect the eye from dirt and debris, as well as providing a cosmetic effect.