Twenty-four pair of eyes donated to the Minnesota Lions Eye Bank were studied to determine the effect of corneal procurement methods on tissue quality. Eyes studied were ineligible for transplantation because of a preexisting medical condition other than sepsis or age of > 75 years. The procurement technique was randomized for each donor. One cornea was procured in situ (IS), whereas the fellow eye was enucleated and processed in the laboratory (EN). Procurement protocols were standard Eye Bank Association of America methods. Tissue characteristics were scored according to standard eye bank protocols. Cultures were performed at the time of tissue procurement and following storage for 7 days in Dexol media. With the exception of endothelial striae, no statistical difference was found between groups for any tissue characteristics. The average score for endothelial striae in the IS group was greater than twice that of the EN group. Initial cultures were positive in 10 of 24 in the IS group and four of 24 in the EN group. Each group had three positive end-storage cultures. These results demonstrate superior tissue decontamination after initial processing and less endothelial cell trauma with standard enucleation when compared to in situ corneal excisions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/00003226-199407000-00004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Low-temperature vacuum evaporation as a novel dehydration process for the long-term preservation of transplantable human corneal tissue.
Cell Tissue Bank
January 2025
Academic Ophthalmology, Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, UK.
Globally there is a shortage of available donor corneas with only 1 cornea available for every 70 needed. A large limitation to corneal transplant surgery is access to quality donor tissue due to inadequate eye donation services and infrastructure in many countries, compounded by the fact that there are few available long-term storage solutions for effectively preserving spare donor corneas collected in countries with a surplus. In this study, we describe a novel technology termed low-temperature vacuum evaporation (LTVE) that can effectively dry-preserve surplus donor corneal tissue, allowing it to be stored for approximately 5 years, shipped at room temperature, and stored on hospital shelves before rehydration prior to ophthalmic surgery.
View Article and Find Full Text PDFRetrospective Clinical Outcomes of Keratoplasty Using Human Donor Corneas Preserved in Eusol-C Hypothermic Storage Medium.
J Clin Med
December 2024
Ophthalmology Unit-Eye Bank of Rome, San Giovanni Addolorata Hospital, 00184 Rome, Italy.
To evaluate the clinical outcomes of cornea transplantation (penetrating keratoplasty, Descemet membrane endothelial keratoplasty, Descemet stripping automated endothelial keratoplasty, and deep anterior lamellar keratoplasty) using donor corneas stored in Eusol-C hypothermic storage medium compared to corneas stored in organ-culture. : The clinical outcomes of 92 patients who underwent corneal transplantation with human donor corneas stored in Eusol-C medium at 2-8 °C were retrospectively evaluated. The control group consisted of 169 patients who received corneas organ-cultured at 31 °C.
View Article and Find Full Text PDFMultiparametric grading of glaucoma severity by histopathology can enable post-mortem substratification of disease state.
Acta Neuropathol Commun
January 2025
Ophthalmology, Novartis Biomedical Research, Cambridge, MA, USA.
Neurodegeneration in glaucoma patients is clinically identified through longitudinal assessment of structure-function changes, including intraocular pressure, cup-to-disc ratios from fundus images, and optical coherence tomography imaging of the retinal nerve fiber layer. Use of human post-mortem ocular tissue for basic research is rising in the glaucoma field, yet there are challenges in assessing disease stage and severity, since tissue donations with informed consent are often unaccompanied by detailed pre-mortem clinical information. Further, the interpretation of disease severity based solely on anatomical and morphological assessments by histology can be affected by differences in death-to-preservation time and tissue processing.
View Article and Find Full Text PDFSuccessful Surgical Management of Intracranial Carotid Artery Trauma Following Penetrating Facial Injury: A Case Report.
Am J Case Rep
January 2025
Department of Otolaryngology, Sanford Medical Center Fargo, Fargo, ND, USA.
BACKGROUND Carotid artery injury has an incidence of 0.2% in the National Trauma Data Bank. The true incidence of intracranial carotid injury is unknown but can be estimated at less than one in 1000 trauma-related inpatient admissions in America.
View Article and Find Full Text PDFAllogenic Cultured Limbal Epithelial Transplantation and Cultivated Oral Mucosal Epithelial Transplantation in Limbal Stem Cells Deficiency: A Comparative Study.
Ophthalmol Ther
January 2025
Corneoplastic Unit and Eye Bank, Queen Victoria Hospital NHS Foundation Trust, East Grinstead, UK.
Introduction: This study compared the clinical outcomes of allogenic cultured limbal epithelial transplantation (ACLET) and cultivated oral mucosal epithelial transplantation (COMET) in the management of limbal stem cell deficiency (LSCD).
Methods: Forty-one COMET procedures in 40 eyes and 69 ACLET procedures in 54 eyes were performed in the Corneoplastic Unit of Queen Victoria Hospital, East Grinstead. Data were examined for demographics, indications, ocular surface stability, absence of epithelial defect, ocular surface inflammation, visual outcomes, and intra- and postoperative complications.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!