Publications by authors named "Jonathan Sears"

Purpose: To evaluate the clinical outcomes and prognostic factors in unilateral Coats disease in the era of anti-VEGF therapy.

Design: Global, multicenter, retrospective case series.

Subjects: 656 eyes of 656 subjects with Coats disease were included in this study.

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Article Synopsis
  • The study examined children aged 3-18 with low vision at an eye center, focusing on their demographics, surgical history, and health determinants from 2014 to 2019.
  • Out of over 47,000 children assessed, 882 had low vision, with common causes including refractive/strabismic amblyopia and retinal diseases; many required surgical interventions.
  • Results showed a strong link between the severity of vision loss and the number of surgeries, while no significant relationship was found between patients' income or insurance and their visual outcomes or need for surgery.*
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The Covid-19 pandemic challenged health care delivery systems worldwide. Many acute care hospitals in communities that experienced surges in cases and hospitalizations had to make decisions such as rationing scarce resources. Hospitals serving low-income communities, communities of color, and those in other historically marginalized or vulnerable groups reported the greatest operational impacts of surges.

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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.

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Article Synopsis
  • The study examines the effects of postnatal steroid treatment on the severity of retinopathy of prematurity (ROP) and its impact on how quickly the retina develops in premature infants born at ≤32 weeks gestation or weighing ≤1500 g.
  • Out of 1695 infants analyzed, 67% received steroid therapy, revealing that higher doses and longer treatment durations significantly increased the incidence of severe ROP and delayed full vascularization of the retina.
  • The findings suggest that the use of postnatal steroids needs to be carefully considered, as they are linked to worse ROP outcomes and slower retinal development in vulnerable infants.
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Purpose: A premature infant was diagnosed with Coats plus syndrome based on a genetic evaluation showing biallelic heterozygous pathogenic variants.

Methods: A case study was performed, including findings and interventions.

Results: A premature infant born 30 weeks gestational age weighing 817 g was evaluated for retinopathy of prematurity at 35 weeks corrected gestational age.

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We asked whether hyperoxia might induce hypomyelination of the corpus callosum, clinically described as periventricular leukomalacia (PVL) of the severely preterm infant. Mouse pups and their nursing dams were placed in 80% oxygen from P4-P8, then removed to room air until P11. Corpus callosal sections were probed myelin immunofluorescence, tested for myelin basic protein concentration by Western blot, and both glial fibrillary acidic protein levels and apoptosis quantified.

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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.

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Oxygen supplementation is necessary to prevent mortality in severely premature infants. However, the supraphysiological concentration of oxygen utilized in these infants simultaneously creates retinovascular growth attenuation and vasoobliteration that induces the retinopathy of prematurity. Here, we report that hyperoxia regulates the cell cycle and retinal endothelial cell proliferation in a previously unknown Myc-dependent manner, which contributes to oxygen-induced retinopathy.

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Importance: Several jurisdictions in the United States have secured hotels to temporarily house people experiencing homelessness who require isolation or quarantine for confirmed or suspected coronavirus disease 2019 (COVID-19). To our knowledge, little is known about how these programs serve this vulnerable population outside the hospital setting.

Objective: To assess the safety of a hotel-based isolation and quarantine (I/Q) care system and its association with inpatient hospital capacity.

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Hyperglycemia is a key determinant for development of diabetic retinopathy (DR). Inadequate glycemic control exacerbates retinopathy, while normalization of glucose levels delays its progression. In hyperglycemia, hexokinase is saturated and excess glucose is metabolized to sorbitol by aldose reductase via the polyol pathway.

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Objective: The use of supplemental oxygen in premature infants is essential for survival. However, its use has been associated with unintended complications. The restricted use of oxygen is associated with increased mortality and necrotizing enterocolitis (NEC), whereas its liberal use is associated with increased risk for retinopathy of prematurity (ROP).

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Article Synopsis
  • The study investigates the prevalence of patient-reported complications from intravitreal injections (IVIs) at a tertiary eye care center, finding an overall low complication rate of 1.9% from over 44,000 injections.
  • Most complications were minor, with irritation and subconjunctival hemorrhage being the most common, while serious complications included corneal abrasion and iritis.
  • Factors such as a patient's gender, age, the number of previous injections, and the provider were shown to influence the risk of complications, but injection protocol parameters did not affect complication rates.
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Purpose: To report a case of vitreous seeding in a medium-sized choroidal melanoma and review the literature.

Methods: Observational case report and review of literature for pathogenesis, role of vitreous biopsy, and treatment outcomes.

Results: A case of 57-year-old man diagnosed with vitreous seeding in the left eye 1 year after episcleral brachytherapy for medium-sized choroidal melanoma.

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Here we rank order small molecule inhibitors of hypoxia inducible factor (HIF) prolyl hydroxylases (PHDs) using severity of oxygen induced retinopathy (OIR) as an outcome measure. Dose response analyses in cell cultures of hepatoma (Hep3B), retinal Müller cells (MIO-M1) and primary retinal endothelial cells were conducted to evaluate potency by comparing dose to HIF-1,2 protein levels by western blotting. dose response was determined using the luciferase-transgene HIF reporter (luc-ODD).

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Although supplemental oxygen is required to promote survival of severely premature infants, hyperoxia is simultaneously harmful to premature developing tissues such as in the retina. Here we report the effect of hyperoxia on central carbon metabolism in primary mouse Müller glial cells and a human Müller glia cell line (M10-M1 cells). We found decreased flux from glycolysis entering the tricarboxylic acid cycle in Müller cells accompanied by increased glutamine consumption in response to hyperoxia.

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: Neonatal retinal folds and/or vitreoretinal traction can be signs of isolated ocular or syndromic disorders. Etiologies include retinopathy of prematurity, perinatal infections or inherited vitreoretinal disorders such as familial exudative vitreoretinopathy (FEVR) or Norrie disease. We present the clinical and genetic findings of a two-month-old infant with microcephaly, mild motor developmental delay, and FEVR, who required urgent surgical interventions.

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Familial exudative vitreoretinopathy (FEVR) can often present with retinal falciform folds, and rarely with retrolenticular adhesive radial retinal folds. Management of advanced FEVR-associated tractional falciform folds with retrolenticular adhesion to the peripheral retina in the literature has been limited to vitrectomy with or without lensectomy. The authors describe a unique surgical management of a case of bilateral FEVR-associated tractional radial folds with nonaxial retrolenticular adhesion treated with scleral buckling with deferred laser, avoiding the complications associated with vitrectomy and lensectomy on ocular development.

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We determined which metabolic pathways are activated by hypoxia-inducible factor 1-mediated (HIF-1-mediated) protection against oxygen-induced retinopathy (OIR) in newborn mice, the experimental correlate to retinopathy of prematurity, a leading cause of infant blindness. HIF-1 coordinates the change from oxidative to glycolytic metabolism and mediates flux through serine and 1-carbon metabolism (1CM) in hypoxic and cancer cells. We used untargeted metabolite profiling in vivo to demonstrate that hypoxia mimesis activates serine/1CM.

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Purpose Of Review: The literature regarding prophylactic treatment of rhegmatogenous retinal detachment in Stickler syndrome remains controversial. We review major published clinical studies and offer a critical analysis of this subject.

Summary: Stickler syndrome is a systemic collagenopathy affecting multiple organ systems including the eye, ear, and skeleton.

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Purpose: Although intravitreal anti-vascular endothelial growth factor (VEGF) injection has become the mainstay treatment for neovascular age-related macular degeneration (nAMD), emerging studies suggest that anti-VEGF may be correlated with the development of macular atrophy (MA) in chronic therapy. The purpose of the current study is to determine the prevalence and progression of MA in nAMD treated with chronic anti-VEGF in a routine clinical practice.

Design: Retrospective cohort.

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Article Synopsis
  • - The SUPPORT trial revealed that maintaining lower oxygen saturation levels in premature infants reduced retinopathy of prematurity (ROP) but led to higher mortality rates compared to higher saturation levels.
  • - A study compared the outcomes of a biphasic oxygen protocol (different saturation targets based on age) with static targets (constant saturation levels) in a neonatal intensive care unit, covering data from 2010 to 2017.
  • - Results indicated that the incidence of any ROP and type 1 ROP increased after switching to the static SUPPORT standards, with significant differences noted in the rates before and after the change.
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