OPHTHALMIC OPERATION 5 corneal transplant

Transplantation of a corneal graft from stored eye of another human being.

Position

Supine.

Anesthesia

General.

Procedure

1.  The donor eye is held in a suitable stand.

2.  And a graft cut from the cornea using a trephine of appropriate size.

3.  An eye speculum inserted.

4.  Traction sutures of synthetic non-absorbable or white silk passed transversely through the insertions of the superior and inferior rectus muscles.

5.  A fine needle knife is passed into the anterior chamber at the limbus in the upper temporal quadrant.

6.  Sterile air injected into the anterior chamber.

7.  The surface of the graft is flush with the surrounding cornea.

8.  Interrupted or continuous 0. 2 (10/0) synthetic non-absorb­able sutures are inserted to unite the corneal graft to the host.

Instruments

•   Anterior segment set

•   Keratoplasty set

•   Scalpel handle with No. 15 blade

•   Support for donor eye (Tudor Thomas)

•   Scissors, right and left (Troutman)

•   Towel clips (Backhaus), 4

•   1 (4) Synthetic non-absorbable or silk on small half circle, reverse cutting needle for traction sutures of rectus muscles

•   0.7 (7/0) Synthetic non-absorbable or silk on small curved needle with cutting edge on concavity of needle point, for cross-over suture to hold graft in place whilst final sutures are being inserted

•   0.2 (10/0) Synthetic non-absorbable on small curved needle with cutting edge on convexity of needle point for sutures to secure graft in position.

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