Publications by authors named "Magno Ferreira"
Background: The purpose of the current study is to report the anatomical and functional results of off-label human amniotic membrane graft as primary intervention to repair large to giant macular holes and in reoperations when wide internal limiting membrane peeling was unsuccessful.
Methods: Retrospective chart review was carried out in five different centers to identify all cases that had undergone off-label human amniotic membrane graft for the treatment of large or failed macular holes (MH). Data collected included age, gender, other concomitant diagnosis, symptoms duration, lens status, number of previous surgeries, macular hole measurements (minimum and base linear diameters), mean post-operative follow-up (months), and pre- and post-operative best corrected visual acuity (BCVA).
Introduction: Vision impairment and blindness have been significantly associated with high medical care expenditures, decrease in health utility, and loss or reduction of productivity. The objective of this study was to assess the humanistic and economic burden of blindness in a Brazilian sample from a societal perspective.
Methods: Cross-sectional, observational, and multicenter study enrolling individuals with blindness (defined as the best corrected visual acuity less than 6/60 in the better-seeing eye) caused by retinal disorders.
Purpose: This survey aimed at assessing the clinical characteristics of patients with inflammatory reactions after intravitreal injection of antiangiogenic agents and the techniques employed by Brazilian retina specialists.
Methods: We sent an 18-item questionnaire electronically to retina specialists who are using antiangiogenic agents. We got the responses between September 21 and December 23, 2018.
Multicenter, Randomized Clinical Trial to Assess the Effectiveness of Intravitreal Injections of Bevacizumab, Triamcinolone, or Their Combination in the Treatment of Diabetic Macular Edema.
Ophthalmic Surg Lasers Imaging Retina
September 2017
Background And Objective: To evaluate the efficacy of combined bevacizumab-triamcinolone intravitreal injection in the treatment of diabetic macular edema (DME) compared to monotherapy.
Patients And Methods: At eight clinical sites, 111 patients with DME were randomly assigned to receive an intravitreal injection of bevacizumab (Avastin; Genentech, South San Francisco, CA), triamcinolone (Ophthalmos Pharmaceutical Industry, São Paulo-SP, Brazil), or their combination. The primary outcome was visual acuity (VA) at 6 months' follow-up.
Purpose: To present the development and initial experience of a novel colored perfluorocarbon liquid (PFCL) in vitreoretinal surgery.
Methods: This was an experimental laboratory study and prospective human interventional study. F6H8 (Fluoron GmbH) was colored by adding 0.
Aim: The goals of this study were to determine the potential for use of the natural anthocyanins from the açai fruit (Euterpe oleracea) during vitreoretinal surgery and the ideal physicochemical properties of the dye.
Methods: We evaluated the color variations of the dye at different pHs and osmolarities with or without the use of mordants as a potential new tool for internal limiting membrane peeling. The extracts of anthocyanin from the açai fruit were analyzed by spectrophotometry to determine the degree of color variations associated with various pHs and osmolarities.
Posterior hyaloid detachment and internal limiting membrane peeling assisted by anthocyanins from acai fruit (Euterpe oleracea) and 10 other natural vital dyes: experimental study in cadaveric eyes.
Retina
January 2013
Purpose: The purpose of this study was to determine whether natural dyes facilitate posterior hyaloid detachment (posterior vitreous detachment [PVD]) and retinal internal limiting membrane (ILM) peeling in human eyes.
Methods: Open-sky vitrectomy with posterior hyaloid and ILM removal was performed in 86 human cadaveric eyes. After core vitrectomy, 11 different dyes were injected into the vitreous cavity to aid hyaloid detachment and ILM removal.
Purpose: To study risk factors, microbiological characteristics, and clinical course of nonviral infectious keratitis diagnosed in a referral service of ophthalmology.
Methods: A total of 65 charts of patients with microbial keratitis were retrospectively reviewed at the Clinical Hospital of Federal University of Uberlandia, Brazil, from July 2001 through August 2004. All cases were submitted to microbiological tests and treated according to local protocol.
The sympathetic ophthalmia is a granulomatous panuveitis that starts after ocular trauma. The prognosis is poor and depends of both early diagnosis and treatment. The authors describe one case of a patient with sympathetic ophthalmia using optical coherence tomography who was submitted to early treatment, and it suggests that the optical coherence tomography can corroborate as a ancillary method in the study of retina characteristics in sympathetic ophthalmia disease specially in cases of rare presentation, with serous retinal detachment as an isolated ophthalmological manifestation.
View Article and Find Full Text PDFOptic nerve avulsion is a rare, but devastating complication. In this condition, the optic nerve is forcibly disinserted from the retina, choroid, and vitreous, and the lamina cribrosa is retracted from the scleral rim. If the media are clear, the avulsion is easily diagnosed.
View Article and Find Full Text PDFPurpose: To describe the ocular lesions that occur after stings from hymenopteran insects.
Methods: We examined the ocular alterations in five patients who suffered ocular trauma from hymenopteran insect stings.
Results: In 4 cases where the insect was identified as a wasp, all the patients presented with persistent corneal decompensation and two presented with total cataract, requiring surgical treatment.