Corneal graft. Keratoconus
Between 10 % to 25 % of cases keratoconus will progress to point where vision correcting is not possible any more, the cornea thinning becomes excessive, or cicatrizing as a result of deterioration of a contact lens causes natural problems, and corneal transplantation, or the through keratoplasty becomes necessary. Keratoconus - the majority of things in common to spend a through keratoplasty, making round a quarter of such procedures. The corneal surgeon of a graft trephines lenticule a corneal tissue and then will transplant a donor cornea to an existing eye tissue, usually using a combination of guidance and individual seams. The cornea does not have direct blood supply, and thus the donor tissue is not obliged to be the compounded group of blood. Eye groups check donor corneas on any illness or cellular irregularities.
The acute continuance of restoration can occupy four - six weeks, and the full postoperative stabilization of vision often occupies year or more but the majority of grafts very inconvertiblly in long-term prospect. National Fund Keratoconus informs, that the through keratoplasty has a majority of a favorable result of all procedures of a graft and when it is executed for keratoconus in differently healthy eye, its frequency of success can make 95 % or larger. The seams used usually, break up during three - five years, but individual seams can be removed during healing process if they cause a boring to the patient.
Grafts of a cornea for keratoconus are usually carried out under a sedation as out-patient surgery, and demand careful continuation with the eye surgeon for many years. Often, vision is very much refined after surgery but even if actual visual acuteness is not refined, because a cornea - more a normal form after healing comes to an end, patients can be easier equipped by corrective lenses. Complications of corneal grafts mainly contact vascularization of a corneal tissue and tearing away of a donor cornea. Vision losses it is very rare, though difficult-to-correct vision is possible. When tearing away is serious, iterate, that grafts are often undertaken, and are often successful. Keratoconus will not meet usually repeated in the replaced cornea; incidences of it were observed, but usually assigned to an incomplete cutting of an original cornea or inadequate shielding of a donor tissue. The remote prospect for the corneal grafts executed for keratoconus, is usually favorable, as soon as the healing initial stage comes to an end, and some years have leaked without problems.
Epikeratophakia
Seldom, not getting keratoplasty known as epikeratophakia (or epikeratoplasty), can be executed in cases keratoconus. The corneal epithelium leaves, and lenticule a donor cornea is transplanted on its vertex. Procedure demands larger level of skill from the surgeon, and is less often carried out than a through keratoplasty as the effect in general is less favorable. It can be noted however as a select in many cases, especially for young patients.
