Background: We present this report of a new ophthalmic finding in a patient with ochronosis.
Case Presentation: An 85-year-old Caucasian male patient with bilateral dark temporal and nasal pigmentation of conjunctiva and sclera was referred to our hospital owing to low visual acuity. On biomicroscopic examination, bilateral horizontal Descemet's membrane folds were observed. Corneal tomography revealed irregular and asymmetric "against-the-rule" astigmatism in both eyes. Anterior segment optical coherence tomography demonstrated numerous central Descemet's without edema or other corneal structure alterations.
Conclusion: This is the first report of Descemet's membrane folds in ochronosis. These corneal findings suggest that the accumulation of homogentisic acid in the sclera leads to thickening and stiffness of this region. These alterations could remarkably decrease visual acuity owing to topographic corneal curvature alterations, especially in elderly patients.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9526938 | PMC |
http://dx.doi.org/10.1186/s13256-022-03599-x | DOI Listing |
Cornea
January 2025
Department of Ophthalmology and Visual Sciences, Case Western Reserve University School of Medicine, University Hospitals Eye Institute, Cleveland, OH.
Purpose: Describe aims, methods, characteristics of donors, donor corneas and recipients, and potential impact of the Diabetes Endothelial Keratoplasty Study (DEKS).
Methods: The DEKS is a randomized, clinical trial to assess graft success and endothelial cell density (ECD) 1 year after Descemet membrane endothelial keratoplasty (DMEK) using corneas from donors with versus without diabetes in a 1:2 minimization assignment. Diabetes severity in the donor is assessed by medical history, postmortem HbA1c, and donor skin advanced glycation end-products and oxidation markers.
Cornea
January 2025
Eye Unit, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy.
Klin Monbl Augenheilkd
January 2025
Ophthalmology, Amsterdam UMC, Amsterdam, Netherlands.
Background: Refractory corneal edema is the foremost reason for endothelial corneal transplantation (EK) in the world. Descemet membrane endothelial keratoplasty (DMEK) and Descemet stripping automated endothelial keratoplasty (DSAEK) offer good clinical outcomes. However, human donor tissue is limited in availability and has a complex logistical chain.
View Article and Find Full Text PDFJ Fr Ophtalmol
January 2025
Centrum Medyczne "Julianów", 91-321 Łódź, ul. Żeglarska, Poland.
J Fr Ophtalmol
January 2025
Service d'ophtalmologie, hôpital La Timone, 264, rue Saint-Pierre, 13005 Marseille, France.
Purpose: To analyze the outcomes and frequency of complications after Descemet's membrane endothelial keratoplasty (DMEK) and evaluate the parameters associated with the occurrence of these complications.
Methods: A multicenter retrospective study of 143 DMEK procedures performed consecutively by five surgeons between June 2018 and March 2021 was performed. Surgeon-specific surgical and graft characteristics were also assessed.
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