The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some elastic fiber. In humans, the whole sclera is white, contrasting with the coloured iris, but in other mammals the visible part of the sclera matches the colour of the iris, so the white part does not normally show. In the development of the embryo, the sclera is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on the sclera can make it appear slightly yellow. Many people with dark skin have naturally darkened sclerae, the result of melanin pigmentation.
The scleral epimacular implant comprises an arm (6) with a curved configuration, having a first end (1), which can be affixed to a retina (8). The arm (6) comprises a second end (3) comprising a discoidal element (4), whose internal face facing the curvature of the arm (6) is constituted as an indentation platform (5), configured to be in contact with the retina (8) when the implant is placed in said retina (8).