Double-Cannula Maneuver for the Double-Roll Configuration of Donor Descemet Membrane Outside Recipient Anterior Chamber During Descemet Membrane Endothelial Keratoplasty.
Cornea
; 43(11): 1436-1440, 2024 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-39137436
ABSTRACT
PURPOSE:
The purpose of this study was to present a new surgical technique to convert a single roll of Descemet membrane (DM) into a double roll using 2 cannulas in a balanced salt solution-filled Petri dish during DM endothelial keratoplasty.METHODS:
A single DM roll stained with trypan blue was placed in a balanced salt solution-filled Petri dish. Two cannulas (28G) were introduced from opposite ends of the single roll, inserted into the roll, and slowly spread apart to change the single roll into a double roll. The DM was aspirated into the modified Jones tube and loaded, maintaining a double-roll configuration with endothelium-down orientation in a bevel-up position. The modified Jones tube with the bevel down was inserted into the recipient anterior chamber through the main wound. The modified Jones tube was rotated to the bevel-up orientation. After checking the graft orientation, the DM was inserted into the recipient anterior chamber. The double-roll DM was easily unfolded by tapping the center of the cornea using a cannula. A 28G cannula was inserted under the DM, and the anterior chamber was filled with air.RESULTS:
Three months after surgery, the patient's corrected visual acuity in the right eye was 6/7.5 and the endothelial cell count was 1095/mm 2 . The corneal thickness was 533 µm, and the cornea was clear.CONCLUSIONS:
The double-cannula maneuver mechanically changes the single roll of the donor DM to a double roll outside the recipient anterior chamber, making DM unfolding easier and minimizing the risk of upside-down apposition of the donor DM.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doadores de Tecidos
/
Lâmina Limitante Posterior
/
Ceratoplastia Endotelial com Remoção da Lâmina Limitante Posterior
/
Câmara Anterior
Limite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Cornea
Ano de publicação:
2024
Tipo de documento:
Article
País de publicação:
Estados Unidos