Abstract Myopia is a common eye abnormality that occurs when the image of a distant object forms before the retina with the ciliary muscle at rest. Among the predisposing factors, genetics and the environment stand out, with the latter gaining importance nowadays, considering the growing increase in the use of electronic screens. In this literature review, the authors seek the relationship between myopia and the use of screens by quantifying and analyzing the conclusions of research related to this topic. […]

Abstract Objective: To determine the factors associated with refractive defects in an urban population of the Peruvian Andes. Methods: A cross-sectional analytical study of secondary data analysis was performed, using all the records of the patients who attended the ophthalmological consultation between January and May 2015, the variables of type of ametropia (astigmatism, myopia and hyperopia), Sex, age, occupation and place of residence of the patients. P values, prevalence ratios and 95% confidence intervals were obtained using generalized linear models. […]

Abstract Objective: To evaluate the choroidal thickness (CT) in healthy Brazilian subjects using spectral-domain optical coherence tomography (SD-OCT) and to compare with choroidal thickness measured in Brazilian patients with diabetic macular edema (DME), neovascular age-related macular degeneration (AMD) and high myopia. Methods: A retrospective analysis of spectral domain optical coherence tomography (SD-OCT) images of 181 Brazilian subjects. A total of 74 eyes were included in the normal control group, 50 eyes in the nvAMD group, 44 eyes in the DME […]

Purpose: To demonstrate the efficacy of 0.025% atropine eyedrops in myopic children in Brazil for decreasing myopia progression Methods: This was a prospective study with 60 children from Hospital Geral Universitário and Oftalmocenter Santa Rosa in Cuiabá, MT, Brazil, aged between 6 to 12 years, with spherical equivalent refractive error of -1.00 to -6.00 diopters (D) and astigmatism of -1.00 D or smaller. They underwent a complete ophthalmological examination, corneal topography and optical biometry. Children were assigned into two groups: […]

OBJECTIVE: Compare PRK and Epi-LASIK techniques regarding postoperative visual recovery and symptoms. METHODS: Interventional case series study including 38 eyes of 19 patients with myopia up to 5DE and astigmatism up to 1DC. Study included patients with similar refractive errors to be submitted to PRK in one eye and Epi-LASIK in the fellow eye at the same time. Follow-up was 1 year and included refractive error analysis and postoperative discomfort. RESULTS: During the first 12 hours after surgery, 79% (P=0,0003) […]

OBJECTIVE: Evaluate the knowledge of medical students from Universidade Estadual de Londrina (UEL), about refractive surgery, as well as analyzing the percentage of students that presents refractive errors, their correction methods and their interest (or not) in the surgical procedure. METHODS: We conducted a survey using self-evaluation questionnaire (previously tested) among 154 medical students from first to fourth year, between september and november 2011. RESULTS: It was reported that 70.8% of students had some type of refractive error, and myopia […]

PURPOSE: To evaluate biomechanical changes measured with the ORA (Ocular Response Analyzer®; Reichert Ophthalmic Instruments, Buffalo, New York, USA) after Lasik with the Moria One Use Plus and to compare the biomechanics changes after myopic and hyperopic ablations. METHODS: Fourteeneyes for hyperopia (H) and 19 eyes for myopia (M) were evaluated with the ORA preoperatively and 1 month after Lasik with thin flap (100 microns) using SBK-OUP (Sub-Bowman Keratomileusis – One Use Plus, Moria®).CH (Corneal Hysteresis), CRF (Corneal Resistance Factor), […]

PURPOSE: to evaluate the long-term results of the prophylactic use of Mitomycin C in inhibiting haze formation after photorefractive keratectomy (PRK) for high myopia. METHODS: This retrospective, descriptive and longitudinal study comprised 59 eyes (30 patients). The inclusion criteria were a spherical equivalent correction over -4,00 diopters, corneal thickness greater than 480 µm, no prior surgery, ocular trauma and ocular and systemic diseases. After PRK, the eyes were treated with a single intraoperative dose of MMC 0.02% applied topically with a […]