Browsing by Autor "Abel Ramírez-Estudillo"

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Case Report: Fibroglial Retinal Tissue in Contractile Morning Glory Disc Anomaly
(Karger Publishers, 2021) Abel Ramírez-Estudillo; Karla Torres-Navarro; Sergio Rojas-Juárez; Ximena Ramirez-Galicia; Berenice Palafox-Cornejo; Adriana Galicia-Castillo
The purpose of the present case is to describe a patient with tractional retinal detachment (RD) associated with contractile morning glory: a 17-year-old female, with a history of failed surgery for RD when she was 2 years old in her right eye (OD), nystagmus, and a limited visual acuity in the left eye (OS). The slit lamp examination showed phthisis bulbi in OD and the anterior segment was unremarkable in OS. Dilated fundus examination revealed a tractional RD in the posterior pole and peripapillary and preretinal fibrosis without evidence of intravitreal dispersion of retinal pigment epithelial cells. After surgery treatment, the RD resolved and the posterior segment showed a staphylomatous excavation around the optic disc anomaly with irregular contractions that folded the macular area. This were unrelated to light, breathing, or eye movements. Although morning glory disc anomaly is associated with RD, the early diagnosis can reverse structural changes. In this case, the rare association with contractile movements was found posterior to the pars plana vitrectomy after all the fibroglial epiretinal tissue was removed.
Lyophilized amniotic membrane patches are a safe and effective treatment for rhegmatogenous lesions in combined tractional and rhegmatogenous retinal detachment: A prospective interventional study
(2024) Ángel García-Vásquez; Sergio Rojas; Geovanni Ríos-Nequis; Abel Ramírez-Estudillo
<title>Abstract</title> <bold>Objetives</bold>: This study was performed to evaluate the safety and effectiveness of a lyophilized amniotic membrane (LAM) as a patch for the treatment of retinal breaks and to describe the structural changes at the implantation site. <bold>Design</bold>: prospective, interventional study. <bold>Subjects</bold>: Patients with diabetic retinopathy and combined tractional and rhegmatogenous retinal detachment. <bold>Methods</bold>: Patients were organized into 3 groups according to the number of rhegmatogenous lesions: those in group A had a single break, those in group B had two breaks, and those in group C had three or more breaks. The location of the break was also evaluated as either superior or inferior. <bold>Main outcomes:</bold> Safety was evaluated and defined as a lack of adverse events or the absence of damage to the retinal tissue and intraocular structures. Efficacy was determined by evaluating SD-OCT images to assess whether complete coverage of the retinal break favouring the proximity of the edges and closure of the retinal break was achieved. <bold>Results</bold>: Of a total of 23 eyes of 23 patients, 22 (95.6%) achieved retinal repair without associated complications. Patients with 2 or fewer rhegmatogenous lesions located inthe superior sector had a better anatomical result as they achieved 100% surgical success. The structural changes observed by SD-OCT showed adequate adaptation of the lyophilized patch and complete closure of the rhegmatogenous lesion with no alterations in the adjacent tissue. <bold>Conclusions</bold>: The LAM patch seems to be safe and effective, as it promotes therapeutic closure of rhegmatogenous lesions without damaging the retinal architecture adjacent to the implantation site.
OCT Features of the Donor Area in Autologous Retinal Transplant Surgery for Macular Hole
(SAGE Publishing, 2024) Silvia Medina-Medina; Abel Ramírez-Estudillo; Sergio Rojas Juárez
Purpose: To describe the structural features of the autologous retinal transplant donor tissue area seen on optical coherence tomography (OCT). Methods: This observational prospective study included patients who had vitrectomy and autologous retinal graft surgery for a macular hole. OCT of the donor area was performed in the postoperative period after gas reabsorption (mean, 16.2 days ±9.8 [SD] after surgery; range, 7 to 28 days), and structural findings in the harvest area were recorded and analyzed. Results: Of the 12 eyes included in the series, most showed glial tissue or some migration of the inner nuclear layer (INL) in the donor area. Hyperreflective dots and epiretinal membranes were present in a few cases; 2 eyes showed denuded retinal epithelial pigment. Conclusions: OCT revealed changes in the donor area, predominantly filled with glial tissue, INL migration, and inflammatory signs, that mostly resolved during follow-up.
Oxymetazoline: reduction of subconjunctival hemorrhage incidence after intravitreal injections
(Elsevier BV, 2018) Gerardo González-Saldívar; Ingrid Pita-Ortíz; Erick Omar Flores-Villalobos; Jesús Noel Jaurrieta-Hinojos; Itzel Espinosa-Soto; Geovanni Ríos-Nequis; Abel Ramírez-Estudillo; Martin Jiménez-Rodríguez
Posterior polar annular choroidal dystrophy association with cystoid macular edema
(Wiley, 2019) Fernando Del Valle‐Nava; Jorge Arturo Sánchez-Ramos; Ángeles Yahel Hernández-Vázquez; Gerardo González-Saldívar; Abel Ramírez-Estudillo
Posterior polar annular choroidal dystrophy (PPACD) is an uncommon retinal dystrophy causing nyctalopia. PPACD has been characteristically described as a foveal sparing dystrophy. We report the first case with cystoid macular edema association.
Primary and secondary retinal capillary haemangioma in Mexico
(Elsevier BV, 2020) Ingrid Pita-Ortíz; J.N. Jaurrieta-Hinojo; I. Espinosa-Soto; Abel Ramírez-Estudillo
Riley-Day Syndrome in a Hispanic Infant of Non-Jewish Ashkenazi Descent
(JCDR Research and Publications Private Limited, 2017) Abel Ramírez-Estudillo
Riley-Day syndrome is an autosomal recessive sensory and autonomic neuropathy. Patients present a lack of fungiform papilla, alacrima and usually feeding difficulties. It is present almost exclusively in Ashkenazi Jewish individuals and has a poor prognosis. We describe an unusual case of Riley-Day syndrome with pseudostrabismus in a non-Ashkenazi Jewish patient. A one-year-old female infant was referred for evaluation of strabismus, absence of fungiform papillae, feeding difficulty, gastroesophageal reflux and episodes of self-mutilation. Deep tendon reflexes were depressed, the blinking rate and corneal reflex were diminished as well and corneas were opaque due to corneal erosions. Reduced lacrimal production was confirmed by the Schirmer test. Eye drops were recommended every 2-3 hours for corneal erosion and the patient was referred to the genetics department for further diagnostic confirmation.
Sub-hyaloid and sub-internal limiting membrane macular hemorrhage after laser exposure at music festival: a case report
(Springer Science+Business Media, 2018) Carla Rocío Pérez-Montaño; José L. Palomares-Ordóñez; Abel Ramírez-Estudillo; Jorge Arturo Sánchez-Ramos; Gerardo González-Saldívar