 |
The "Champagne Cork" Keratoprosthesis (KP)
The main characteristic of this KP is the fixation to the healthy and stable
sclera instead of the diseased cornea, as with all corneal grafts and all
other keratoprosthesis models.
The anticonical shape of the KP creates a
“valve” on the cornea, guaranteeing a watertight situation. The aequatorial
scleral fixation keeps the valve around the trephined hole.
The pressure in the eye pushes the corneal rim around the 3mm top of the
anticonical shaft of the KP.
Advantages:
|
• |
The cornea should merely act as a host to the
KP, with minimal participation in preventing its extrusion. |
|
• |
The steel suture fixation on the
aequatorial sclera take care of preventing extrusion |
|
• |
The "pressure from behind"
prevents:
|
- |
Leaking of aequeous humor between the KP
and the cornea. |
|
- |
Melting away of corneal tissue around the KP. |
|
- |
Penetration of superficial infection. |
|
|
|
|
Aequatorial Scleral
Fixation with stainless steel sutures
|
|
