Novel spatula and dissector for safer deep anterior lamellar keratoplasty

Gustavo Bonfadini, Eun Chul Kim, Mauro Campos, Albert S. Jun

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: We describe a novel spatula and dissector to facilitate the big-bubble technique in deep anterior lamellar keratoplasty (DALK). Methods: A 29-year-old man who was diagnosed with bilateral keratoconus underwent deep anterior lamellar keratoplasty (DALK). After 350μm partial thickness incision of the recipient cornea, the Bonfadini dissector was inserted at the deepest point in the peripheral incision and could be advanced to the center of the cornea safely because of its "semi-sharp" tip. After achieving the big-bubble (BB) separation of Descemet membrane (DM) from the overlying stroma, the anterior stromal disc was removed. Viscoelastic material was placed on the stromal bed to prevent uncontrolled collapse and perforation of DM during the paracentesis blade incision into the BB. We could detect the safe opening of the BB using the Bonfadini dissector by the leakage of air bubbles into the viscoelastic material. After injecting viscoelastic material into the BB space, we inserted the Bonfadini spatula into the bigbubble safely because of its curved profile and blunt edges. The groove along the length of the Bonfadini spatula enables safe and efficient incision or the residual stromal tissue using the pointed end of a sharp blade while protecting the underlying DM. After removal of posterior stroma, the donor button was sutured with 16 interrupted 10-0 nylon sutures. Results: This technique and the use of the Bonfadini spatula and dissector facilitate exposure of Descemet membrane. Conclusion: The smooth Bonfadini DALK spatula and dissector facilitate safe and efficient completion of DALK surgery.

Original languageEnglish (US)
Pages (from-to)279-281
Number of pages3
JournalRevista Brasileira de Oftalmologia
Volume73
Issue number5
DOIs
StatePublished - 2014

Keywords

  • Bonfadini dissector
  • Bonfadini spatula
  • Corneal transplantation/methods
  • Deep anterior lamellar keratoplasty
  • Keratoplasty

ASJC Scopus subject areas

  • Surgery
  • Ophthalmology

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