Cornea

Sclera

Submitted by Vishnu on Tue, 2010-07-27 14:20

The white, fibrous, protective outer layer of the eye, composed primarily of collagen and elastic fibers. The sclera varies in thinkness from about 0.3 mm to 1 mm, and is covered by a thin layer of tinnue called the conjunctiva.

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Stem Cells for Reversing Blindness

An Italian study using the person's own limbal corneal stem cells to grow new corneal tissue has resulted in restoring sight to a recipient who had been blind for 50 years.  The ability to grow new corneas opens the possibility to grow new retinal tissue, reversing blindness, providing nerve cells have not been damaged.

The treatment restored sight to more than three-quarters of the 112 patients treated, said lead researcher,  Dr. Graziella Pelligrini of the University of Modena’s Center for Regenerative Medicine. Patients were followed for 3-10 years.

Cornea

Submitted by Vishnu on Tue, 2010-07-20 13:47

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea is a continuation of the sclera, or the white of the eye, and is made of collagen fibers laid down in such a fashion that it is transparent and able to admit light. Together with the lens, the cornea refracts light, accounting for approximately two-thirds of the eye’s total optical power.

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