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Microbubble technique in failed deep anterior lamellar keratoplasty: 2-year outcomes

Abstract

Purpose

To compare the long-term results of big-bubble technique and microbubble techniques to complete stroma dissection after failure of achieving a big-bubble.

Methods

A total of 35 eyes with keratoconus underwent lamellar keratoplasty with the big-bubble technique (15 eyes) or the microbubble technique (15 eyes). Conversion to penetrating keratoplasty was performed in 3 eyes of the big-bubble group and in 2 eyes of the microbubble group. Best-corrected visual acuity, corneal thickness, corneal astigmatism, and endothelial cell count were assessed preoperatively and at 12 and 24 months after surgery.

Results

Mean preoperative visual acuity was 0.29 ± 0.18 in the big-bubble group and 0.25 ± 0.15 in the microbubble group. Postoperatively, all patients showed a regular interface between donor and recipient tissue. At 24 months, mean best-corrected visual acuity was 0.84 ± 0.16 in the big-bubble group and 0.68 ± 0.17 in the microbubble group (p = 0.013), and mean central corneal thickness was 530 ± 39 µm in the big-bubble group and 545 ± 30 µm in the microbubble group. Astigmatism was 2.41 ± 1.29 D and 3.59 ± 1.48 D (p = 0.036), respectively, while endothelial cell density was 1,671 ± 371 in the big-bubble group and 1,567 ± 275 in the microbubble group.

Conclusions

The microbubble technique appears to be a valid alternative as it was safe and provided good functional results.

Post author correction

Article Type: SURGICAL TECHNIQUE

Article Subject: Cornea

DOI:10.5301/ejo.5001038

Authors

Stefano Lippera, Giuseppe Pallotta, Piero Ferroni, Myrta Lippera, Leopoldo Spadea, Carlo Cagini

Article History

Disclosures

Financial support: No financial support was received for this submission.
Conflict of interest: None of the authors has conflict of interest with this submission.

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Authors

Affiliations

  •  Eye Unit, “E. Profili” Hospital, Fabriano (Ancona) - Italy
  •  Department of Biotechnology and Medical-Surgical Science, “Sapienza” University of Rome, Latina - Italy
  •  Ophthalmology Section, Department of Surgery and Biomedical Science, S.M. della Misericordia Hospital, University of Perugia, Perugia - Italy

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