PMC7098348_01
Case 1. Sulfur hexafluoride gas induced acute filtering bleb failure after Descemet membrane endothelial keratoplasty. a Slit-lamp photography shows gas tamponade in the anterior chamber covering half of the pupil and inferior patent iridotomy (red arrow; note deep anterior chamber without signs of pupillary block and air bubbles around the red arrow below the contact lens). b Multiple gas bubbles visible within the bleb (yellow arrow). c Visualization of gas bubbles inside the bleb using optical coherence tomography. Intraocular pressure was elevated to 50 mm Hg.
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F1
SF6 gas could be visualized within the bleb in slit-lamp photography and optical coherence tomography (Fig. 1). Six days after surgery, the patient could be discharged to ambulatory care.
PMC7098348_02
Case 2. Sulfur hexafluoride gas induced acute filtering bleb failure after Descemet membrane endothelial keratoplasty. a Slit-lamp photography shows gas tamponade in the anterior chamber covering the pupil and inferior patent iridotomy (blue arrow; note deep anterior chamber). b Gas bubbles visible within the bleb (green arrow). Intraocular pressure was elevated to 50 mm Hg.
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F2
IOP peak could be observed. In every slit-lamp examination up to day 4 after DMEK, gas filling of the bleb was observed (Fig. 2).