Publications by authors named "Jean Baptiste Conart"

The purpose of this paper is to evaluate macular microvascular changes and their correlation with visual outcomes after idiopathic epiretinal membrane (iERM) surgery. Forty-seven eyes operated for iERM were included in this retrospective case series. The foveal avascular zone (FAZ) area, and the vessel density (VD) in the superficial and the deep capillary plexus (SCP and DCP) were evaluated using optical coherence tomography angiography (OCTA).

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Purpose: To report the rate of retinal redetachment after silicone oil removal following rhegmatogenous retinal detachment surgery and to determine potential risk factors.

Methods: Retrospective observational case series of 161 eyes who underwent rhegmatogenous retinal detachment surgery and subsequent silicone oil removal. Pre- and intraoperative risk factors were evaluated using univariate and multivariate logistic regression.

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Objective: Uveitis are inflammatory disorders of various etiologies. The first-line etiological workup is currently poorly codified, and some patients undergo sequential investigations. However, what leads the clinician to perform subsequent exams and the relevance of such exams remain to be determined.

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Article Synopsis
  • - The study investigated how common metamorphopsia (visual distortion) is after surgery for rhegmatogenous retinal detachment (RRD) and what factors might predict its occurrence.
  • - In a group of 107 patients, metamorphopsia prevalence dropped from 51.4% to 29.9% over six months post-surgery, and certain eye structure changes were linked to this improvement.
  • - The only preoperative factor that predicted postoperative metamorphopsia was macular detachment, while an assessment tool called M-CHARTS proved effective for predicting recovery in visual distortion after six months.
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Background: This study aims to assess and compare the impact of Orthokeratology Double Reservoir Lens (DRL) versus Single Vision Lenses (SVL) on axial elongation and anterior chamber biometric parameters in myopic children over a 6- and 12-month treatment period in France.

Methods: A retrospective study involving 48 patients aged 7 to 17 years, who underwent either orthokeratology treatment or single-vision spectacle correction, was conducted. Changes in refractive error, axial length, and anterior chamber depth were examined.

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Background: MTR gene encodes the cytoplasmic enzyme methionine synthase, which plays a pivotal role in the methionine cycle of one-carbon metabolism. This cycle holds a significant importance in generating S-adenosylmethionine (SAM) and S-adenosylhomocysteine (SAH), the respective universal methyl donor and end-product of epigenetic transmethylation reactions. cblG type of inherited disorders of vitamin B12 metabolism due to mutations in MTR gene exhibits a wide spectrum of symptoms, including a retinopathy unresponsive to conventional therapies.

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Introduction: To evaluate the effect of an intravitreal injection of bevacizumab at the time of rhegmatogenous retinal detachment (RRD) surgery, on postoperative proliferative vitreoretinopathy (PVR) in high-risk patients selected by laser flare photometry.

Methods: This single-center observational retrospective cohort study included 137 consecutive patients who underwent pars plana vitrectomy and gas tamponade for primary RRD with increased aqueous flare between July 2016 and June 2021. From June 2019, an intravitreal injection of bevacizumab was administered as an adjunct to RRD repair.

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Purpose: To compare the efficacy and the safety of submacular hemorrhage (SMH) management using either surgical pars plana vitrectomy (PPV) or pneumatic displacement (PD) with tissue plasminogen activator (tPA) and vascular endothelial growth factor (VEGF) inhibitor added to each arm.

Design: Randomized, open-label, multicenter superiority study.

Participants: Ninety patients with neovascular age-related macular degeneration (nAMD) 50 years of age or older with recent SMH (≤ 14 days) of more than 2 optic disc areas and predominantly overlying the retinal pigment epithelium.

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Background: Bipolar disorders (BD) is a common, chronic and disabling psychiatric condition. In addition to being characterized by significant clinical heterogeneity, notable disturbances of sleep and cognitive function are frequently observed in all phases of the disease. Currently, there is no readily available biomarker in current clinical practice to help diagnose or predict the disease course.

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Purpose: To evaluate the effect of the temporal inverted internal limiting membrane (ILM) flap technique compared with that of conventional ILM peeling on the extent of the dissociated optic nerve fiber layer (DONFL) and retinal sensitivity in patients undergoing macular hole (MH) surgery.

Design: Single-center, prospective, open-label, randomized controlled clinical trial.

Participants: Patients requiring vitrectomy for MHs sized > 250 μm.

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Bipolar disorder is a lifelong condition. Today, there is a urgent need to find indicators of the disease. Specifically, they could be useful to improve the diagnosis and the early detection, the prognosis, to estimate the treatment response and to create homogeneous subgroups of patients based on similar pathophysiological mechanisms.

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Purpose: To evaluate macular microvascular changes and their correlation with visual outcomes after rhegmatogenous retinal detachment (RRD) surgery.

Design: Retrospective case series.

Participants: The study included 74 eyes successfully operated for RRD.

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Hypoxia is potentially one of the essential triggers in the pathogenesis of wet age-related macular degeneration (wetAMD), characterized by choroidal neovascularization (CNV) which is driven by the accumulation of subretinal mononuclear phagocytes (MP) that include monocyte-derived cells. Here we show that systemic hypoxia (10% O) increased subretinal MP infiltration and inhibited inflammation resolution after laser-induced subretinal injury in vivo. Accordingly, hypoxic (2% O) human monocytes (Mo) resisted elimination by RPE cells in co-culture.

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Purpose: The aim of the study was to investigate the effect of tamponade duration on retinal changes induced by silicone oil (SO) in patients who underwent successful rhegmatogenous retinal detachment (RRD) surgery.

Methods: Retrospective comparative case series of 68 patients who underwent SO tamponade for RRD. Patients were divided into 2 groups based on timing of SO removal: <6 months (group 1, n = 34) versus ≥6 months (group 2, n = 34).

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Inherited disorders of cobalamin (cbl) metabolism (cblA-J) result in accumulation of methylmalonic acid (MMA) and/or homocystinuria (HCU). Clinical presentation includes ophthalmological manifestations related to retina, optic nerve and posterior visual alterations, mainly reported in cblC and sporadically in other cbl inborn errors.We searched MEDLINE EMBASE and Cochrane Library, and analyzed articles reporting ocular manifestations in cbl inborn errors.

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Background: Antiphospholipid syndrome (APS) is characterized by several clinical manifestations such as venous and arterial thrombosis associated with persistent antiphospholipid antibodies (aPL). Several studies confirmed that retinal vein occlusion was the most common APS ocular manifestation. The purpose of this study was to identify ophthalmologic manifestations in a homogeneous cohort of well-defined persistently aPL-positive patients and to determine variables associated with these manifestations.

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Article Synopsis
  • The study examined 408 eyes undergoing surgery for idiopathic epiretinal membrane (iERM) to find the prevalence of posterior vitreous attachment (PVA) and its preoperative predictive factors.
  • About 20.1% of the eyes showed PVA, with axial length and lens status being significant factors; longer axial lengths decreased the odds of PVA, while phakic eyes had a higher risk.
  • Despite the occurrence of PVA, it did not impact the surgical outcomes, while factors like shorter axial length and lower preoperative visual acuity were linked to worse visual recovery.*
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Purpose: To evaluate if the presence of uveitis in Behçet's disease (BD) is associated with a particular clinical phenotype and to analyze the prognostic impact of a missed diagnosis of BD at the time the uveitis is diagnosed.

Materiel And Methods: Ophthalmologic and systemic clinical features of 51 patients with BD were recorded retrospectively. We compared the clinical phenotype of patients with ocular manifestations with those without ocular manifestations.

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Background: Rhegmatogenous retinal detachment (RD) involving the macula is a major cause of visual impairment despite high surgical success rate, mainly because of cone death. RD causes the infiltration of activated immune cells, but it is not clear whether and how infiltrating inflammatory cells contribute to cone cell loss.

Methods: Vitreous samples from patients with RD and from control patients with macular hole were analyzed to characterize the inflammatory response to RD.

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Purpose: To develop and investigate an evidence-based performance test for assessment of vitreoretinal surgical skills on the EyeSi Surgical Simulator.

Methods: Ten junior residents without any surgical experience, eight senior residents with prior experience in cataract surgery and five vitreoretinal surgeons were included in the study. The test consisted of seven modules and was completed twice by all groups during a single session.

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A minor haplotype of the 10q26 locus conveys the strongest genetic risk for age-related macular degeneration (AMD). Here, we examined the mechanisms underlying this susceptibility. We found that monocytes from homozygous carriers of the 10q26 AMD-risk haplotype expressed high amounts of the serine peptidase HTRA1, and HTRA1 located to mononuclear phagocytes (MPs) in eyes of non-carriers with AMD.

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Purpose: To evaluate and to compare the anatomical and functional results of phacovitrectomy and pars plana vitrectomy (PPV) alone for phakic rhegmatogenous retinal detachment.

Methods: Retrospective, comparative case series of 266 phakic eyes that underwent either combined phacovitrectomy or PPV alone for primary retinal detachment. The primary anatomical success rate, the final best-corrected visual acuity, and the refractive outcomes were analyzed.

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CD36, a member of the class B scavenger receptor family, participates in Toll-like receptor signaling on mononuclear phagocytes (MP) and can promote sterile pathogenic inflammation. We here analyzed the effect of CD36 deficiency on retinal inflammation and photoreceptor degeneration, the hallmarks of age-related macular degeneration (AMD), that characterize mice. We analyzed subretinal MP accumulation, and cone- and rod-degeneration in light-challenged and aged, CD36 competent or deficient, hyper-inflammatory mice, using histology and immune-stained retinal flatmounts.

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Article Synopsis
  • The study investigates the damage to outer retinal layers after surgery for macula-off rhegmatogenous retinal detachment (RRD) and identifies preoperative risk factors.
  • A total of 253 eyes were analyzed, showing a high prevalence of defects in outer retinal layers at one month post-surgery, with a notable decrease by six months.
  • Longer duration of macular detachment was linked to more damage, while earlier surgery correlated with better visual outcomes and fewer defects, suggesting timely intervention could enhance recovery.
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