Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus

Background New approaches have been created to raise the chances of achieving big bubble (BB) in deep anterior lamellar keratoplasty (DALK); however, the BB formation is still uncertain in all cases. Other factors likely contribute to the success of bubble formation. Aim To evaluate the effect of pr...

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Main Authors: Mohamed S Hassan, Ahmed A Elmassry, Alaa A Ghaith, Mohamed B Goweida
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2021-01-01
Series:Journal of the Egyptian Ophthalmological Society
Subjects:
Online Access:http://www.jeos.eg.net/article.asp?issn=2090-0686;year=2021;volume=114;issue=3;spage=73;epage=76;aulast=Hassan
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spelling doaj-51758da94f3540d287abdbea2c730d122021-10-07T05:06:55ZengWolters Kluwer Medknow PublicationsJournal of the Egyptian Ophthalmological Society2090-06862314-66482021-01-011143737610.4103/ejos.ejos_45_21Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconusMohamed S HassanAhmed A ElmassryAlaa A GhaithMohamed B GoweidaBackground New approaches have been created to raise the chances of achieving big bubble (BB) in deep anterior lamellar keratoplasty (DALK); however, the BB formation is still uncertain in all cases. Other factors likely contribute to the success of bubble formation. Aim To evaluate the effect of preoperative curvature of the cornea on the success of BB formation in DALK for keratoconus. Design A prospective, comparative, nonrandomized study. Patients and methods The study was performed on 50 keratoconus patients. We compared the data of 25 patients who had successful type-1 bubble formation versus another 25 patients in whom the bubble formation failed. Both groups were compared regarding the keratometric readings recorded from the preoperative pentacam. Results The analysis showed statistically significant lower K1, K2, and Km values in the group where BB has been successfully achieved. We also found that lower K1 value was the only significant studied factor after the multivariate analysis. Conclusion Keratoconus patients with preoperative flatter corneas have slightly higher chances for successful BB formation during DALK surgery.http://www.jeos.eg.net/article.asp?issn=2090-0686;year=2021;volume=114;issue=3;spage=73;epage=76;aulast=Hassanbig bubbledeep anterior lamellar keratoplastykeratoconus
collection DOAJ
language English
format Article
sources DOAJ
author Mohamed S Hassan
Ahmed A Elmassry
Alaa A Ghaith
Mohamed B Goweida
spellingShingle Mohamed S Hassan
Ahmed A Elmassry
Alaa A Ghaith
Mohamed B Goweida
Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
Journal of the Egyptian Ophthalmological Society
big bubble
deep anterior lamellar keratoplasty
keratoconus
author_facet Mohamed S Hassan
Ahmed A Elmassry
Alaa A Ghaith
Mohamed B Goweida
author_sort Mohamed S Hassan
title Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
title_short Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
title_full Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
title_fullStr Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
title_full_unstemmed Evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
title_sort evaluation of the effect of preoperative corneal curvature on the successful formation of the big bubble formation in deep anterior lamellar keratoplasty for keratoconus
publisher Wolters Kluwer Medknow Publications
series Journal of the Egyptian Ophthalmological Society
issn 2090-0686
2314-6648
publishDate 2021-01-01
description Background New approaches have been created to raise the chances of achieving big bubble (BB) in deep anterior lamellar keratoplasty (DALK); however, the BB formation is still uncertain in all cases. Other factors likely contribute to the success of bubble formation. Aim To evaluate the effect of preoperative curvature of the cornea on the success of BB formation in DALK for keratoconus. Design A prospective, comparative, nonrandomized study. Patients and methods The study was performed on 50 keratoconus patients. We compared the data of 25 patients who had successful type-1 bubble formation versus another 25 patients in whom the bubble formation failed. Both groups were compared regarding the keratometric readings recorded from the preoperative pentacam. Results The analysis showed statistically significant lower K1, K2, and Km values in the group where BB has been successfully achieved. We also found that lower K1 value was the only significant studied factor after the multivariate analysis. Conclusion Keratoconus patients with preoperative flatter corneas have slightly higher chances for successful BB formation during DALK surgery.
topic big bubble
deep anterior lamellar keratoplasty
keratoconus
url http://www.jeos.eg.net/article.asp?issn=2090-0686;year=2021;volume=114;issue=3;spage=73;epage=76;aulast=Hassan
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