Femtosecond Laser-Assisted Big Bubble for Deep Anterior Lamellar Keratoplasty
Author Type(s)
Student
Document Type
Article
Publication Date
1-2021
Journal Title
Journal of Cataract and Refractive Surgery
Abstract
PURPOSE: To assess the utility of a femtosecond laser-assisted stromal channel to assist the creation of a big bubble (BB) for deep anterior lamellar keratoplasty (DALK) surgery in cadaveric corneas.
SETTING: L V Prasad Eye Institute, Hyderabad, India.
DESIGN: Experimental study.
METHODS: An attempt to create a BB was made on 10 donor pairs of human cadaveric corneoscleral tissues. The 20 corneas were split into 2 groups: Group A underwent femtosecond laser pretreatment and Group B had conventional manual deep lamellar technique. Laser pretreatment was performed using the VisuMax femtosecond laser system to create a stromal channel using the intracorneal ring segment treatment module for direct insertion of the 27-gauge air cannula for pneumodissection at a predetermined depth.
RESULTS: Of the 20 corneas studied, type 1 BB was achieved in 9 of 10 corneas in Group A and in 7 of 10 corneas in Group B. One cornea from Group A had a combined type 1 and 2 BB, whereas no BB was achieved in 1 cornea.
CONCLUSIONS: Creation of an intrastromal channel using a femtosecond laser at a predetermined depth seemed to be a promising option to increase the chances of achieving a BB when compared with the conventional air injection technique of BB DALK.
Recommended Citation
Gogri, P. Y., Bore, M. C., Rips, A. G., Reddy, J. C., Rostov, A. T., & Vaddavalli, P. K. (2021). Femtosecond Laser-Assisted Big Bubble for Deep Anterior Lamellar Keratoplasty. Journal of Cataract and Refractive Surgery, 47 (1), 106-110. https://doi.org/10.1097/j.jcrs.0000000000000400
