<P> 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 . </P>
<P> 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 . </P>
where is the sclera located in the eye
where is the sclera located in the eye
also known as the white of the eye , is the opaque , fibrous , protective , outer layer
also known as the white of the eye , is the opaque , fibrous , protective , outer layer