The sclera is part of the white of the eye in common parlance, and the outer layer of the sclera is covered by the conjunctiva. Because the sclera is white and opaque, it is often referred to as the white of the eye or white eye. The sclera is the outer structure of the eye, which is hard and also opaque and magnetically white in color. The sclera serves as the protective layer of the eye by maintaining the shape of the human eye and protecting it. Normally, the sclera is white, but there are some abnormalities, such as jaundice, the sclera can appear yellow, and some elderly people also have yellow sclera due to hyperpigmentation. It is recommended that patients with scleral lesions seek prompt medical attention to evaluate their condition and treat them under the guidance of a physician.