Purpose: This study compared two imaging grading techniques to assess the utility of longitudinal image-based analysis in retinopathy of prematurity (ROP) screening: (1) time-limited without image comparison (a proxy for bedside indirect ophthalmoscopy, termed sBIO) and time-unlimited with image comparison (for telemedicine grading, termed TELE) screening. We tested two hypotheses: (1) H1: TELE was superior to sBIO for the detection of change (Tempo)-same, better, or worse and (2) H2: granular data of change (e.g.
View Article and Find Full Text PDFBackground: To address the threat of retinopathy of prematurity (ROP) in Sub-Saharan Africa (SSA), the Stop Infant Blindness in Africa (SIBA) project introduced a comprehensive program, including subspecialty training and oxygen management equipment.
Methods: A before-and-after retrospective cohort study compared preterm infants < 1750 g or < 34 weeks' gestation before (2022) and after (2023) program implementation. Outcomes included: the proportion with severe ROP, the proportion with Zone III vascularization on first examination, and factors associated with severe ROP.
Purpose: To evaluate whether providing clinicians with an artificial intelligence (AI)-based vascular severity score (VSS) improves consistency in the diagnosis of plus disease in retinopathy of prematurity (ROP).
Design: Multireader diagnostic accuracy imaging study.
Participants: Eleven ROP experts, 9 of whom had been in practice for 10 years or more.
Retinopathy of prematurity (ROP) is a leading cause of childhood blindness. Not only do the epidemiologic determinants and distributions of patients with ROP vary worldwide, but clinical differences have also been described. The Third Edition of the International Classification of ROP (ICROP3) acknowledges that aggressive ROP (AROP) can occur in larger preterm infants and involve areas of the more anterior retina, particularly in low-resource settings with unmonitored oxygen supplementation.
View Article and Find Full Text PDFK-ion batteries (KIBs) have the potential to offer a cheaper alternative to Li-ion batteries (LIBs) using widely abundant materials. Conversion/alloying anodes have high theoretical capacities in KIBs, but it is believed that electrode damage from volume expansion and phase segregation by the accommodation of large K-ions leads to capacity loss during electrochemical cycling. To date, the exact phase transformations that occur during potassiation and depotassiation of conversion/alloying anodes are relatively unexplored.
View Article and Find Full Text PDFRetinopathy of prematurity (ROP) is a significant cause of potentially preventable blindness in preterm infants worldwide. It is a disease caused by abnormal retinal vascularization that, if not detected and treated in a timely manner, can lead to retinal detachment and severe long term vision impairment. Neonatologists and pediatricians have an important role in the prevention, detection, and management of ROP.
View Article and Find Full Text PDFPurpose: To investigate late vitreoretinal complications and visual outcomes in patients with regressed retinopathy of prematurity (ROP) with or without prior treatment.
Design: International, multicenter, noncomparative retrospective case series.
Participants: We analyzed 264 eyes of 238 patients from 13 centers worldwide who developed vitreoretinal complications (retinal detachment [RD], vitreous hemorrhage [VH], or retinal break) ≥ 2 years after resolution of acute ROP.
Purpose: To evaluate the prevalence of retinal disease on fluorescein angiography (FA) in patients with incontinentia pigmenti (IP) and to compare the severity of retinal disease in those with and without known central nervous system (CNS) disease.
Design: Multi-institutional consecutive retrospective case series.
Subjects: New patients with a diagnosis of IP were seen at the Casey Eye Institute at the Oregon Health and Science University (OHSU), Moran Eye Center, University of Utah, or Bascom Palmer Eye Institute, University of Miami from December 2011 to September 2018.
Universal newborn eye screening facilitates early diagnosis of ocular abnormalities and mitigates vision loss. "Referral warranted" eye disease is present at birth in about 5.5% of term infants, with "macular hemorrhage impinging on the fovea" representing about 50% of referral warranted disease.
View Article and Find Full Text PDFACS Appl Mater Interfaces
November 2021
While Li-ion is the prevailing commercial battery chemistry, the development of batteries that use earth-abundant alkali metals (e.g., Na and K) alleviates reliance on Li with potentially cheaper technologies.
View Article and Find Full Text PDFPurpose: The International Classification of Retinopathy of Prematurity is a consensus statement that creates a standard nomenclature for classification of retinopathy of prematurity (ROP). It was initially published in 1984, expanded in 1987, and revisited in 2005. This article presents a third revision, the International Classification of Retinopathy of Prematurity, Third Edition (ICROP3), which is now required because of challenges such as: (1) concerns about subjectivity in critical elements of disease classification; (2) innovations in ophthalmic imaging; (3) novel pharmacologic therapies (e.
View Article and Find Full Text PDFPerformance decline in Li-excess cathodes is generally attributed to structural degradation at the electrode-electrolyte interphase, including transition metal migration into the lithium layer and oxygen evolution into the electrolyte. Reactions between these new surface structures and/or reactive oxygen species in the electrolyte can lead to the formation of a cathode electrolyte interphase (CEI) on the surface of the electrode, though the link between CEI composition and the performance of Li-excess materials is not well understood. To bridge this gap in understanding, we use solid-state nuclear magnetic resonance (SSNMR) spectroscopy, dynamic nuclear polarization (DNP) NMR, and electrochemical impedance spectroscopy (EIS) to assess the chemical composition and impedance of the CEI on LiRuO as a function of state of charge and cycle number.
View Article and Find Full Text PDFOphthalmic Surg Lasers Imaging Retina
July 2020
Background And Objective: To describe a safe and dependable protocol for intravitreal injections for the treatment of retinopathy of prematurity (ROP).
Materials And Methods: SAFER is an acronym used to describe the injection protocol and includes (S)hort needle (4-mm length), (A)ntiseptic/antibiotic (5% to 10% topical betadine), (F)ollowup (48 to 72 hours post-injection), (E)xtra attention to detail (clean environment, injection site 0.75 mm to 1.
Dendrite formation during electrodeposition while charging lithium metal batteries compromises their safety. Although high-shear-modulus (G) solid-ion conductors (SICs) have been prioritized to resolve the pressure-driven instabilities that lead to dendrite propagation and cell shorting, it is unclear whether these or alternatives are needed to guide uniform lithium electrodeposition, which is intrinsically density-driven. Here, we show that SICs can be designed within a universal chemomechanical paradigm to access either pressure-driven dendrite-blocking or density-driven dendrite-suppressing properties, but not both.
View Article and Find Full Text PDFPurpose: Clomiphene citrate may be used as an off label treatment of hypogonadism. There are few long-term data on clomiphene citrate efficacy and safety when administered for more than 3 years. We assessed improvements in testosterone and hypogonadal symptoms while on clomiphene citrate for extended periods.
View Article and Find Full Text PDFOphthalmic Surg Lasers Imaging Retina
April 2019
Background And Objective: Retinovascular anomalies in the fellow eyes of patients with Coats' disease have been described, but the clinical significance is unknown, as well as whether these lesions progress over time.
Patients And Methods: This is an international, multicenter, retrospective, observational cohort study of fellow-eye abnormalities on widefield fluorescein angiography in patients with Coats' disease.
Results: Three hundred fifty eyes of 175 patients with Coats' disease were analyzed.
Objective: To evaluate the relationship between pre-eclampsia and development of retinopathy of prematurity (ROP) in infants with birth weight of <1500 g and/or gestation <31 weeks.
Methods: A retrospective cohort study comprising infants born to mothers with pre-eclampsia between January 2007 and June 2010 at a single tertiary care centre. Their ROP outcome was compared with infants born to the next two normotensive mothers with a ±1 week gestational age difference.
Purpose: To describe a case and present unique images of a metallic intraocular foreign body that was identified in a 12-year-old male patient who underwent routine magnetic resonance imaging (MRI) to assess neurodevelopmental delay.
Observations: We present MRI and diagnostic imaging of a metallic intraocular foreign body in a young patient with no known history of trauma or reason for the existence of metal in the eye area. Computed tomography scan was performed to confirm the presence of the intraocular foreign body, followed by optical coherence tomography and electroretinogram to assess visual status.
Background/aims: To describe an alternative technique for avoiding contact with the lids and lashes, without the use of a lid speculum, during intravitreal anti-vascular endothelial growth factor injections.
Methods: Retrospective case series of all patients undergoing intravitreal injections of bevacizumab and ranibizumab, with the lid splinting retraction technique from January 2010 to December 2015. Injections performed by six vitreoretinal specialists were included.
Objective: The aim of this study was to evaluate the visual and structural outcomes of eyes that received ranibizumab as treatment for retinopathy of prematurity (ROP).
Methods: This was a retrospective case series of infants who received a 0.2 mg (0.
PurposeTo investigate whether the observed international differences in retinopathy of prematurity (ROP) treatment rates within the Benefits of Oxygen Saturation Targeting (BOOST) II trials might have been caused by international variation in ROP disease grading.MethodsGroups of BOOST II trial ophthalmologists in UK, Australia, and New Zealand (ANZ), and an international reference group (INT) used a web based system to grade a selection of RetCam images of ROP acquired during the BOOST II UK trial. Rates of decisions to treat, plus disease grading, ROP stage grading, ROP zone grading, inter-observer variation within groups and intra-observer variation within groups were measured.
View Article and Find Full Text PDF