The sclera, also known as the white of the eye, is the opaque (usually white, though certain animals, such as horses and lizards, can have black sclera), fibrous, protective, outer layer of the eye containing collagen and elastic fiber. It is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, however, fatty deposits on the sclera can make it appear slightly yellow. The sclera forms the posterior five sixths of the connective tissue coat of the globe. It is continuous with the dura mater and the cornea, and maintains the shape of the globe, offering resistance to internal and external forces, and provides an attachment for the extraocular muscle insertions. The sclera is perforated by plenty of nerves and vessels passing through the posterior scleral foramen, the hole that is formed by the optic nerve. At the optic disk the outer two-thirds of the sclera continues with the dura mater (outer layer)
The sclera, also known as the white of the eye, is the opaque (usually white, though certain animals, such as horses and lizards, can have black sclera), fibrous, protective, outer layer of the eye containing collagen and elastic-fiber-1.
source: http://www.answers.com/sclera#cite_note-Cassin-0
The white part of the eye is the sclera, the colored part is the Iris, and the 'black dot' (which is actually just a hole reaching the back of the eye) is the pupil
The white part of the eye is called the sclera
It's called the Sclera.
the sclera
Sclera
The opaque middle layer of the eyeball is referred to as the choroid. The structure is made up of a total of four layers.
the pupil =]
The outer part, Sklera
The black circle in the eye is called the pupil.
middle vascular tunic
Sclera
The white of the eye is called the Sclera.
The Iris.
It's the white part of the eyeball.
sclera.outer most layer of eye ball.it is the tough layer. it provides firmness to eyeball.
Schlera
No
Rods and cones are inside a layer of the eyeball called the retina.
The gel that is inside the eyeball is called "vitreous humour".
the yellow part of an egg is called the yolk, and the white part is called the egg white also called the albumen.
The white part of an egg is called the (Egg white). It's also called albumen.
One reason could be the increased amount of sunlight inducing the brown color in the sclera.