Fuchs endothelial corneal dystrophy masking an underlying postrefractive surgery ectasia

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Introduction: This article describes a case presenting Fuchs endothelial corneal dystrophy (FECD) masking an underlying postrefractive surgery ectasia. Patient and Clinical Findings: A 69-year-old woman presented in January 2022 with blurriness, halos, and glare in the left eye. Ocular history included a photorefractive keratectomy performed twice in her left eye in 2007 for hyperopic astigmatism. A diagnosis of asymptomatic Fuchs dystrophy was noted in 2010. She had acute decompensation of the cornea in the left eye because of FECD, and the first Descemet-stripping automated endothelial keratoplasty (DSAEK) with cataract surgery was performed in 2018. Diagnosis, Intervention, and Clinical Findings: The patient had a failed DSAEK graft in the left eye. A repeat DSAEK was performed in 2022, and 6 months postoperatively, the patient started showing signs of ectasia in the left eye. The authors believe the ectasia was preexisting but masked by the failed DSAEK graft and FECD and started showing after corneal deturgescence postoperatively. Conclusions: The presence of FECD and corneal ectasia can complicate diagnosis because of overlapping clinical and topographic features. This case highlights the importance of preoperative topography with epithelial/stromal thickness mapping in patients with a history of multiple refractive corneal procedures to consider the possibility of ectasia and prevent unforeseen outcomes and complications. Further research is necessary to determine standardized imaging techniques, particularly in cases of concurrent diseases.

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