Corneal lamellar dissection by using suture threads in porcine eyes.
OBJECTIVE
Lamellar dissection is one of the most delicate maneuvers in corneal surgery. We describe a new method that uses Ferrara ring instrumentation.


METHODS
A 360 degrees tunnel is created at half of the stromal depth in porcine corneas. A suture (nylon 6-0 or Vicryl 6-0) was passed through the tunnel by using the Ferrara spatula. By means of alternate traction on the end of the suture thread, complete lamellar dissection was achieved.


RESULTS
Light microscopy examination of the cornea confirmed that the dissection had a constant thickness and dissection depth. Scanning electron microscopy showed a homogeneous stromal surface without irregularities.


CONCLUSIONS
This technique permits a homogeneous and safe lamellar dissection, which may prove useful in specific surgical procedures of the cornea.
Rocha
Germán A
GA
Universidad Católica, Santiago, Chile.
Durán
Juan A
JA
Acera
Arantxa
A
Merayo
Jesús
J
D000818:Animals; D003319:Corneal Stroma / Q000601:surgery* / Q000648:ultrastructure; D016039:Corneal Transplantation / Q000379:methods*; D008855:Microscopy, Electron, Scanning; D009757:Nylons; D011098:Polyglactin 910; D013536:Suture Techniques; D013537:Sutures; D013552:Swine
D009757:Nylons; D011098:Polyglactin 910