Publications by authors named "David Pelayes"

Background: To reveal clinical findings related to metastatic conjunctival melanoma.

Methods: 10 ophthalmic oncology centres (9 countries and 4 continents) shared data to create a large clinical case series. The main outcome measures were the incidence and cumulative risk of systemic metastasis, study mortality rates and Kaplan-Meier patient mortality after developing conjunctival melanoma metastasis.

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Objective: This study aimed to develop a validated machine learning model to diagnose small choroidal melanoma.

Design: This is a cohort study.

Subjects Participants And/or Controls: The training data included 123 patients diagnosed as small choroidal melanocytic tumor (5.

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Objective: To analyse ocular and systemic findings of patients presenting with systemic metastasis.

Methods And Analysis: It is an international, multicentre, internet-enabled, registry-based retrospective data analysis. Patients were diagnosed between 2001 and 2011.

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Background: To relate conjunctival melanoma characteristics to local control.

Methods: Retrospective, registry-based interventional study with data gathered from 10 ophthalmic oncology centres from 9 countries on 4 continents. Conjunctival melanoma patients diagnosed between January 2001 and December 2013 were enrolled in the study.

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Importance: Eye cancer staging systems used for standardizing patient care and research need to be validated.

Objective: To evaluate the accuracy of the eighth edition of the American Joint Committee on Cancer (AJCC) Cancer Staging Manual in estimating metastatis and mortality rates of conjunctival melanoma.

Design, Setting, And Participants: This international, multicenter, registry-based case series pooled data from 10 ophthalmic oncology centers from 9 countries on 4 continents.

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A paracentesis prior to an intravitreal injection is a very safe procedure and can prevent IOP-spikes after injections. As these spikes pose the risk of inducing glaucomatous changes particularly in patients with frequent injections and/or with a risk profile, a regular paracentesis prior to an injection may be considered and discussed with the patient.

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Purpose: To report cytopathological observations on the cells retrieved from the 25-G cannula used during prognostic transvitreal fine-needle aspiration biopsy of choroidal melanoma.

Methods: Transvitreal fine-needle aspiration biopsy of choroidal melanoma was performed through a 25-G valved cannula. Twenty samples from 20 consecutive patients were obtained.

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Objective: To evaluate a technique of autologous internal limiting membrane (ILM) fragment transplantation for the treatment of large, chronic, and/or refractory macular holes (MH).

Design: This was a 6-month prospective interventional case series.

Method: Ten eyes of 10 patients with MH underwent pars plana vitretomy (PPV) and ILM peeling followed by transplantation of an autologous ILM fragment to the MH.

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This case report describes peripheral idiopathic polypoidal choroidal vasculopathy (IPCV) with a collection of small aneurysmal dilations that masqueraded as choroidal tumors in an elderly patient. A 68-year-old African American woman was referred to us with a suspected diagnosis of asymptomatic vascular choroidal tumor and choroidal capillary hemangioma, affecting the temporal peripheral fundus. Upon examination, optical coherence tomography (OCT) revealed two large hemorrhagic pigment epithelium detachments (PED), and indocyanine green angiography (ICG) confirmed the diagnosis of IPCV.

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Purpose: To evaluate the results of intravitreal bevacizumab (IVB) injection on contrast sensitivity (CS), best-corrected visual acuity (BCVA), foveal thickness (FT) and macular volume (MV) as measured by optical coherence tomography in patients with macular edema (ME) from central retinal vein occlusion (CRVO).

Methods: Sixteen consecutive eyes from 16 patients with ME from unilateral CRVO were treated with a single IVB injection. The CS, BCVA, FT and MV measurements were obtained before the treatment and 1 and 3 months after the injection.

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Background/aims: To investigate the association between VEGF gene polymorphism and response to ranibizumab in neovascular age-related macular degeneration (AMD).

Methods: A total of 92 patients were genotyped for the VEGF rs1413711 single nucleotide polymorphism. Patients with neovascular AMD initially received 3 monthly ranibizumab intravitreal injections and were retreated as needed.

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Therapeutic radiation to the posterior segment of the eye is a common option for posterior segment tumors. Such tumors are often malignant, but sometimes, benign neoplasms are treated with ionizing radiation. Also, non-neoplastic intraocular lesions like wet age-related macular degeneration may be treated with radiotherapy.

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Among primary uveal tumors, uveal melanoma is the most frequently occurring malignant neoplasm, albeit much less common than skin melanoma and indeed most other cancers. Traditionally, uveal melanoma was treated by enucleation of the globe, but is now increasingly been managed by an eye-preserving option, which saves vision without compromising the life of patients. More than 90% of eyes now preserved have some form of radiotherapy; most often episcleral brachytherapy that is easily accessible at many ophthalmic centers.

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Purpose: To compare the efficacy of therapy with panretinal photocoagulation (PRP) and intravitreal bevacizumab (IVB) injections versus PRP alone in patients with high-risk proliferative diabetic retinopathy (HR-PDR) with a 6-month follow-up.

Methods: Forty-two patients with HR-PDR were prospectively studied in a randomised, masked, controlled trial. Both eyes of each patient were randomised either to the study group (SG) receiving PRP plus IVB injections or the control group (CG) receiving PRP alone.

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Purpose: To compare the effect on contrast sensitivity (CS) measurements of panretinal photocoagulation (PRP) associated with intravitreal bevacizumab (IVB) injections versus PRP alone in high risk proliferative diabetic retinopathy (HR-PDR).

Design: Prospective, randomised, masked, controlled trial.

Participants: 42 patients with HR-PDR with visual acuity ≥20/200.

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Background/aims: The aim of this paper is to report the treatment of type 2 nonproliferative idiopathic macular telangiectasia (IMT) with intravitreal bevacizumab (IVB).

Methods: Retrospective case series of 10 eyes of 5 patients with type 2 IMT. All patients received 3 monthly IVB injections.

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Introduction: Certain injuries, especially those with a deep-impact (involving the choroid and even the sclera) intraocular foreign body (IOFB), have a high risk for developing either full-blown proliferative vitreoretinopathy (PVR) or full-thickness retinal folds. Although less severe than the former, this so-called 'stage 0 PVR' can severely impact vision, and effective treatment for these folds has not existed heretofore.

Patients And Methods: Four eyes of 4 patients sustained an IOFB injury with deep impact.

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Background: Brilliant blue G (BBG) is frequently used in chromovitrectomy to facilitate internal limiting membrane (ILM) peeling. A study was initiated to evaluate if heavy BBG is safe and effective in staining the ILM.

Methods: We studied 30 eyes, 23 with idiopathic macular holes and 7 of patients with diabetic macular edema.

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Introduction: It has been previously shown that adult mesenchymal stem cells (MSCs) differentiate into neural progenitor cells (NPCs) and that the differentiation process was completed in 24-48 h. In this previous study, MSCs from a bone marrow or fat source were co-incubated with homologous autoaggressive cells (ECs) against nerve tissue, and these NPCs were successfully used in human regenerative therapeutic approaches. The present study was conducted to investigate whether a similar differentiation method could be used to obtain autologous retinal progenitor cells (RPCs).

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Purpose: Panphotocoagulation reduces the risk of vision loss in proliferative diabetic retinopathy. However, not many patients tolerate this treatment well due to pain. Therefore, we evaluated the analgesic effect of etoricoxib during photocoagulation in patients with proliferative diabetic retinopathy.

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Purpose: To report the optical coherence tomographic features differentiating choroidal nevus from choroidal melanoma by 3D spectral-domain optical coherence tomography (SD-OCT) and OCT characteristics of other choroidal tumors.

Methods: A total of 67 consecutive eyes with choroidal tumors including choroidal nevus (25 eyes), indeterminate choroidal melanocytic lesion (11 eyes), malignant melanoma (23 eyes), metastasis (4 eyes), hemangioma (2 eyes), and osteoma (2 eyes) were imaged with 3D SD-OCT (OCT-1000; Topcon Inc., Paramus, NJ).

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Purpose: To determine the efficacy of liquid-based cytology (LBC) and immunohistochemistry in the evaluation of fine needle aspiration biopsy (FNAB) of intraocular melanocytic tumors.

Methods: Cytologic diagnosis was necessary in 25 patients with intraocular melanocytic tumors to deliver a therapeutic course of treatment. The patients' clinical, cytologic, and histologic diagnoses were correlated.

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