Purpose: Autologous retinal transplantation has been successfully employed in the treatment of large and myopic macular holes that are refractory to standard surgical treatments. Patients transplanted with a peripheral neurosensory retinal graft have shown unexpected improvements in visual acuity. The study aims to investigate if neural integration of the graft takes place in a porcine model of retinal hole.
View Article and Find Full Text PDFPurpose: To investigate the histopathological changes following subretinal amniotic membrane transplantation in an in vivo porcine model of retinal holes.
Methods: Left eyes of 12 Danish Landrace pigs were vitrectomized under full anesthesia. A subretinal bleb was created before excising a retinal hole (1154-2934 µm) using a 23-gauge vitrector.
Invest Ophthalmol Vis Sci
August 2024
Purpose: To investigate retinal wound healing, we created a new porcine model of retinal hole and identified the cells involved in hole closure.
Methods: Sixteen landrace pigs underwent vitrectomy, and a subretinal bleb was created before cutting a retinal hole using a 23G vitrector. No tamponade was used.
Purpose: To explore the genetic background of choroidal and ciliary body melanoma among children and young adults, with special focus on BAP1 germline variants in this age group.
Methods: Patients under the age of 25 and with confirmed choroidal or ciliary body melanoma were included in this retrospective, multicenter observational study. Nuclear BAP1 immunopositivity was used to evaluate the presence of functional BAP1 in the tumor.
To provide insights into targetable oncogenic pathways, this retrospective cohort study investigated the genetic profile of 26 patients with diffuse large B-cell lymphoma, not otherwise specified (DLBCL-NOS), and two patients with high-grade B-cell lymphoma with and rearrangements (HGBCL) presenting in the ocular adnexa. Pathogenic variants and copy number variations in 128 B-cell lymphoma-relevant genes were analyzed by targeted next-generation sequencing. Genetic subtypes were determined with the LymphGen algorithm.
View Article and Find Full Text PDFAnn Surg
February 2024
Objective: To investigate overall survival (OS) and health-related quality of life (HRQOL) of first-line isolated hepatic perfusion (IHP) compared to best alternative care (BAC) for patients with uveal melanoma liver metastases.
Summary Background Data: Approximately half of patients with uveal melanoma develop metastatic disease, most commonly in the liver and systemic treatment options are limited. Isolated hepatic perfusion (IHP) is a locoregional therapy with high response rates but with unclear effect on overall survival (OS).
Invest Ophthalmol Vis Sci
February 2024
Purpose: Uveal melanoma (UM) has a high propensity to metastasize. Prognosis is associated with specific driver mutations and copy number variations (CNVs), but limited primary tumor tissue is available for molecular characterization due to eye-sparing irradiation treatment. This study aimed to assess the rise in circulating tumor DNA (ctDNA) levels in UM and evaluate its efficacy for CNV-profiling of patients with UM.
View Article and Find Full Text PDFActa Ophthalmol
August 2024
Purpose: To examine complications, visual outcomes, photic patient-reported symptoms, corneal morphology, IOL tilt, and intraocular pressure after implantation of an intraocular lens (IOL) and iris prosthesis (IP) following iridocyclectomy.
Methods: Patients with previous iridocyclectomy treated with an IOL and IP at the Copenhagen University Hospital Rigshospitalet between 2007 and 2018 were included in this national retrospective non-comparative case series. The assessment encompassed BCVA, PRO questionnaire, corneal topography, and anterior segment OCT.
Ugeskr Laeger
November 2023
Ocular tumours may arise from various tissues and therefore present as a heterogeneous group of diseases with unspecific symptoms. Some of the tumours carry a high mortality with a life expectancy less than 50% after ten years. Early diagnosis and treatment are essential for a good outcome, and centralization has led to a decreased morbidity and increased survival in Denmark.
View Article and Find Full Text PDFPurpose: To study the relationship between positioning and rhegmatogenous retinal detachment (RRD) progression before surgery in patients with a fovea-on RRD.
Design: Prospective, single-cohort study.
Subjects: Patients with fovea-on RRD admitted to hospital for bedrest before surgical treatment were recruited.
Melanoma isolated to the iris is rare and can present with a distorted pupil. This is a case report of an 81-year-old asymptomatic man, who had a large pigmented element in his left iris through 30 years. Because of involvement of the angle the tumour was excised with the ciliary body, and histopathologic examination revealed an iris melanoma.
View Article and Find Full Text PDFJ Clin Oncol
June 2023
Purpose: About half of patients with metastatic uveal melanoma present with isolated liver metastasis, in whom the median survival is 6-12 months. The few systemic treatment options available only moderately prolong survival. Isolated hepatic perfusion (IHP) with melphalan is a regional treatment option, but prospective efficacy and safety data are lacking.
View Article and Find Full Text PDFPurpose: Increased disease-specific mortality has been observed among patients with local recurrence (LR) from uveal melanoma (UM), but the underlying mechanism is unknown. The purpose of this study was to determine if copy number alterations of chromosomes 3 and/or 8q, at the time of diagnosis, increase the incidence of LR and if disease-specific mortality among patients with LR depends on the chromosome status of the primary tumor.
Design: Retrospective cohort study.
Uveal melanoma (UM) is the most common primary intraocular tumor in adults. New diagnostic procedures and basic science discoveries continue to change our patient management paradigms. A recent meeting of the European Vision Institute (EVI) special interest focus group was held on "Outcome Measures of New Technologies in Uveal Melanoma," addressing the latest advances in UM, starting with genetic developments, then moving on to imaging and treatment of the primary tumor, as well as to investigating the most recent developments in treating metastases, and eventually taking care of the patient's well-being.
View Article and Find Full Text PDFIntroduction: Administration of retinal gene and stem cell therapy in patients with retinal degenerative diseases is in many cases dependent on a subretinal approach. It has been indicated that manual subretinal injection is associated with outer retinal damage, which may be explained by a high flow rate in the injection cannula. In the present porcine study, we evaluated flow-related retinal damage after controlled subretinal injection at different flow rates.
View Article and Find Full Text PDFBackground: Studies on the risk of new primary cancer in patients with posterior uveal melanoma (UM) have produced conflicting results, and the role of socioeconomic status (SES) is unknown. The purpose of this population-based matched cohort study was to determine the risk of new primary cancer following the diagnosis of posterior UM.
Methods: 2179 patients with posterior UM 1968-2016 and 22,717 matched controls without cancer were included.
Purpose: To estimate the frequency of first-time ocular events in patients treated with immune checkpoint inhibitors (ICI).
Methods: Patients with cancer in 2011-2018 in Denmark were included and followed. The outcomes were first-time ophthalmologist consultation and ocular inflammation.
Purpose: The aim of this study was to optimize the technique of performing vitrectomy-assisted biopsy of intraocular tumors by comparing the cytohistological findings in specimens obtained with different vitrectomy probes and cut rates.
Methods: Vitrectomy-assisted biopsies were taken from a fresh porcine liver. For each sampling, the vacuum level was 300 mm Hg.
Purpose: To develop a method to label proliferating corneal endothelial cells (ECs) in rabbits in vivo and track their migration over time.
Methods: We compared intraperitoneal (IP) and intracameral (IC) administration of 5-ethynyl-2'-deoxyuridine (EdU) in two experiments: (1) six rabbits received IP or IC EdU. Blood and aqueous humor (AH) samples were incubated with HL-60 cells.
Purpose: Rhino-orbital-cerebral mucormycosis (ROCM) is a rare opportunistic infection with a high mortality despite relevant treatment.
Observations: A 3-year-old girl under treatment for acute lymphoblastic leukemia developed periorbital swelling, ophthalmoplegia and a necrotic palatal lesion during a period of neutropenia. Imaging revealed sinusitis, pre- and postseptal cellulitis.