What is the difference between Conjunctiva and Sclera?

The significant difference between sclera and conjunctiva is that sclera is the translucent layer that envelops the entire eye except for the cornea. The sclera is the white portion of the eye, which is the dense connective tissue of the eyeball. Sclera makes up about 80 percent exterior area of the eye, and it surrounds the cornea region as well. It reaches up to the optic nerve and exists in the back of the eye.

The thickening of this durable outer coating ranges from .3mm to 1.0mm, which is made from fibers of collagen. The random arrangement and interweaving of collagen fibers in the sclera deliver strength and eyeball flexibility. Conjunctiva is the transparent membrane encompassing the sclera, and the interior lining of the eyelids is known. Conjunctiva does not cover up the cornea of the eye. It has several important purposes, including protection of the soft tissues of the orbit and the eyelid, aqueous mucus layers, the supply of the immune tissue, and facilitation of independent globe movement.