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iOCT-assisted DALK conducted by an expert surgeon. After air injection (A), a failure in big bubble formation was visible thanks to iOCT, with different areas of residual adherence between posterior stroma and DM (B). iOCT helped the surgeon perform manual dissection of the planes (C) and final assessment of the uniformity of DM (D). iOCT = intra-operative optical coherence tomography; DALK = Deep anterior lamellar keratoplasty; DM = Descemet membrane.
