What is the corneal surgery?
corneal surgery is any surgery surgery performed on the furthest layer of the eye, called the cornea. The cornea is a transparent furthest part of the eye that helps to focus and refract light. Corner damage causes visual distortion or complete loss of vision. Corneal surgery can consist of corneal transplantation, stromal rings to maintain the correct corneal shape or implantation of artificial cornea. Newer types of corneal surgery include osteo-dento-cerecprosthesis, stem cell implantation and biosynthetic cornea.
The healthy cornea is shaped by the center of thinner than the periphery. The shape of the cornea is decisive for its proper function; Incorrectly the corneal shape bends light and distorts vision. The finding of the cornea completely prevents light and the greater the degree of scarring, darker and more blurred vision becomes. Excessive scarring could cause corneal surgery to be unlikely, because the new tissue may not be graft properly in this case.
in TransplanThe cornea taci is partially removed and replaced by a donated healthy cornea with the expectation that the new tissue will grow with the old ones. The cornea receives its oxygen and nutrition from the air and from the water humor of the eye. There is no blood supply, allowing corneal transplantation to be rejected much less likely than other types of transplants.
Another type of corneal surgery is the placement of strings. Stromal rings are implanted in the inner layer or cornea trees. The purpose is to force the wrong cornea into a shape that receives light into the eye with small or no distortion. Research shows that the degree of success of the stromal rings is lower than that of corneal transplantation.
artificial cornea is an alternative to traditional transplantation. The artificial cornea is a banner of a device that is used instead of donated cornea tissue. This type of corneal surgery potentially eliminates the possibility of SELGrinding graft and is much more expensive than corneal transplantation. It is usually done when graft failure is highly probable or when traditional corneal transplant has failed.
rarely used by the procedure known as osteo-dento-orato-frostheza can be used to help patients with the most serious corneal damage. The thin layer of the patient's tooth is grafted at the site of corneal damage and an artificial lens is placed in the dental graft.
Other forms of corneal surgery include implantation of stem cells and biosynthetic cornea. The implantation of stem cells includes the insertion of healthy corneal stem cells after the corneal is removed. These stem cells are then distinguished into a healthy cornea. Experimental biosynthetic cornea are made of collagen grown on special cell types and shaped into the cornea.