RESUMO
The objective of this study is to study the influence of ocular variables in the perception of #thedress and to develop a logistic regression model that could help predict it. This is a cross-sectional study on 1,100 subjects. People who did not report one of the two main perceptions were excluded from the study. Dress perception was codified as 0 (white&gold) or 1 (black&blue). The association between dress perception and demographic and main ocular variables (age, gender, binocular visual acuity, grade of nuclear cataract, crystalline lens status [phakic/pseudophakic], spherical equivalent, and ocular health status) was tested using logistic regression. Receiver operation curves were used to test the predictive value of the model. Several variables were found to be related with dress perception. The best model included three variables-Age: adjusted odds ratio (OR) = 1.02 (1.01-1.03), p = 0.08; ocular refraction: adjusted OR = 1.07 (1.02-1.12), p = 0.009; and nuclear cataract grade: adjusted OR = 1.45 (1.05-1.99), p = 0.026. The predictive value of the model was low (area under the curve = 0.62). Older age, nuclear cataract grade, and hyperopia were associated with black&blue perception. The predictive capacity of the developed model was poor. Only a small proportion of the variability in the #thedress perception can be explained by ocular examination.
Assuntos
Catarata , Percepção de Cores , Idoso , Estudos Transversais , Olho , Humanos , Refração Ocular , Acuidade VisualRESUMO
Purpose: The presence of the so called disc at risk (a small disc with no cupping) has been considered the main risk factor for the development of non-arteritic anterior ischemic optic neuropathy (NAION). However its role as a prognostic factor has not been studied. Our aim was to determine the weight of disc configuration as a risk and a prognostic factor for NAION. Methods: Case control study. Forty eyes of 40 patients who were diagnosed with NAION between 2008 and 2017, and 120 controls (3 controls for each patient) were included in the study. Disc diameter (DD), cup to disc ratio (CDR), and peripapillar retinal nerve fiber layer thickness (RNFLT) of the non-affected eye were measured using optic coherence tomography (3D OCT 2000, Topcon). Crowding index (CI) was defined as the quotient of average RNFLT and disc area. Mean deviation (MD) at the time of diagnosis and at least three months later was determined using a Humphrey Visual Field Analyzer (SITA standard 24-2 strategy). Visual acuity (VA) was measured using Snellen charts and transformed into LogMAR values. Results: Only CDR was found to be a risk factor for NAION. No correlationship was found between CI and visual loss. Conclusions: DD and CI did not show value as either prognostic or risk factors. Glial tissue may be a part of the content of the optic disc as important as axons. Our results are in line with the latest studies about NAION pathophysiology. Contrary to classic thinking, these papers have not found smaller disc diameters, but smaller values of lamina cribosa depth in NAION patients.
Assuntos
Disco Óptico/fisiopatologia , Neuropatia Óptica Isquêmica/fisiopatologia , Transtornos da Visão/fisiopatologia , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fibras Nervosas/patologia , Prognóstico , Células Ganglionares da Retina/patologia , Tomografia de Coerência Óptica/métodos , Acuidade Visual/fisiologia , Testes de Campo Visual , Campos Visuais/fisiologiaAssuntos
Catarata/etiologia , Lesões da Córnea/complicações , Corpos Estranhos no Olho/complicações , Migração de Corpo Estranho/complicações , Lepidópteros , Idoso , Animais , Catarata/diagnóstico por imagem , Extração de Catarata , Lesões da Córnea/diagnóstico por imagem , Lesões da Córnea/cirurgia , Corpos Estranhos no Olho/diagnóstico , Corpos Estranhos no Olho/cirurgia , Migração de Corpo Estranho/diagnóstico , Migração de Corpo Estranho/cirurgia , Cabelo , Humanos , Larva , Masculino , Tomografia de Coerência ÓpticaAssuntos
Atrofia Óptica Hereditária de Leber/diagnóstico , Células Ganglionares da Retina/patologia , Tomografia de Coerência Óptica/métodos , Campos Visuais/fisiologia , Humanos , Masculino , Fibras Nervosas/patologia , Atrofia Óptica Hereditária de Leber/fisiopatologia , Testes de Campo Visual , Adulto JovemAssuntos
Fóvea Central/patologia , Neuropatia Óptica Isquêmica/complicações , Papiledema/etiologia , Transtornos da Visão/etiologia , Acuidade Visual , Idoso , Feminino , Angiofluoresceinografia , Fundo de Olho , Humanos , Neuropatia Óptica Isquêmica/diagnóstico , Neuropatia Óptica Isquêmica/fisiopatologia , Papiledema/diagnóstico , Papiledema/fisiopatologia , Tomografia de Coerência Óptica , Transtornos da Visão/diagnóstico , Transtornos da Visão/fisiopatologiaRESUMO
PURPOSE: To evaluate the relationship between the photoreceptor layer status (inner segment ellipsoid band and external limiting membrane) and the foveal avascular zone size, as a result of macular perfusion, in patients with diabetic macular edema. METHODS: This observational case series study included 151 eyes of 118 patients with naive diabetic macular edema. The length of the disrupted photoreceptor layer was assessed by optical coherence tomography. The foveal avascular zone diameter was measured on fluorescein angiogram. RESULTS: No significant association was found between the foveal avascular zone size and the mean lengths of the disrupted inner segment ellipsoid band nor the external limiting membrane in patients with naive diabetic macular edema. CONCLUSION: Macular ischemia, which lengthens the distance from the perifoveal vessels to the center of the fovea and may disrupt the normal flow of nutrients by simple diffusion to the photoreceptor line, does not seem to influence on inner segment ellipsoid band nor external limiting membrane integrity. Future studies may evaluate the effect of choroidal vascularization on the photoreceptor layer status to enhance the knowledge about the photoreceptor layer nutrients source.
Assuntos
Retinopatia Diabética/fisiopatologia , Edema Macular/fisiopatologia , Células Fotorreceptoras de Vertebrados/patologia , Vasos Retinianos/fisiologia , Barreira Hematorretiniana/fisiologia , Permeabilidade Capilar , Retinopatia Diabética/diagnóstico , Feminino , Angiofluoresceinografia , Hemoglobinas Glicadas/metabolismo , Humanos , Isquemia/diagnóstico , Isquemia/fisiopatologia , Edema Macular/diagnóstico , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Tomografia de Coerência Óptica , Acuidade Visual/fisiologiaRESUMO
AIM: To determine the effect of topical 0.05% cyclosporine A (CsA) on corneal endothelium in patients with dry eye disease. METHODS: Observational, prospective, case series study. Fifty-five eyes of 29 consecutive patients (9 males and 20 females; median age: 66.8 years, interquartile range: 61-73.2 years) with moderate-severe dry eye disease were evaluated. All patients were treated with topical 0.05% CsA ophthalmic emulsion twice a day in addition to lubricant eyedrops 5 times a day. The follow-up period was 12 months. Before treatment and at 3 and 12 months post-treatment central corneal specular microscopy was performed. The endothelial cell density (ECD), coefficient of variation of cell size (CoV), and percentage of hexagonal cells (Hex %) were analyzed. RESULTS: The median ECDs pre-treatment and at 3 and 12 months post-treatment were 2 352.5/mm(2) (interquartile range, 2 178-2 548.5), 2364/mm(2) (interquartile range, 2 174.25-2 657.5), and 2366 cells/mm(2) (interquartile range, 2 174.75-2 539.75), respectively (P=0.927, one way ANOVA). The median CoVs pre-treatment and at 3 and 12 months post-treatment were 34.5 (interquartile range, 30-37), 35 (interquartile range, 30-38), and 34 (interquartile range, 30.75-38.25), respectively (P=0.7193, one way ANOVA). The median Hex % values pre-treatment and at 3 and 12 months post-treatment were 53 (interquartile range, 47-58), 54 (interquartile range, 45.75-59), and 50.5 (interquartile range, 45.75-58), respectively (P=0.824, one way ANOVA). CONCLUSION: Treatment of patients with dry eye disease for 12 months with topical 0.05% CsA does not seem to cause substantial changes on corneal endothelium.
RESUMO
PURPOSE: To determine the effect of intravitreal injection of ranibizumab on the corneal endothelium in patients with choroidal neovascularization in age-related macular degeneration. METHODS: Observational prospective case series study. Fifty-two eyes of 52 consecutive patients (29 men, 23 women; age range, 61-80 years) were evaluated. All participants received monthly intravitreal injections of (0.05 mL, 0.5 mg) ranibizumab for 3 consecutive months; the follow-up period was 6 months. Central corneal specular microscopy was performed before injection and at 7 days and 6 months after the first intravitreal injection. The endothelial cell density, coefficient of variation of cell size, and percentage of hexagonal cells were analyzed, and the central corneal thickness was measured. RESULTS: There were no significant differences in the endothelial cell densities, coefficient of variation of cell sizes, and percentage of hexagonal cells values before injection and at 7 days and 6 months after the first intravitreal ranibizumab injection (P = 0.987, P = 0.822, and P = 0.918, respectively). There was also no significant difference in central corneal thickness measurements before injection and at 7 days and 6 months after the first intravitreal ranibizumab injection (P = 0.325). CONCLUSION: Repeated intravitreal injections of 0.5 mg of ranibizumab do not seem to cause substantial changes in the corneal endothelium at 6 months.
Assuntos
Anticorpos Monoclonais/administração & dosagem , Endotélio Corneano/efeitos dos fármacos , Degeneração Macular/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Contagem de Células , Tamanho Celular , Endotélio Corneano/patologia , Feminino , Seguimentos , Humanos , Injeções , Masculino , Microscopia , Pessoa de Meia-Idade , Estudos Prospectivos , Ranibizumab , Corpo VítreoAssuntos
Inibidores da Angiogênese/farmacologia , Anticorpos Monoclonais/farmacologia , Endotélio Corneano/efeitos dos fármacos , Degeneração Macular/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Estudos Prospectivos , RanibizumabAssuntos
Segmento Anterior do Olho/patologia , Síndrome de Exfoliação/diagnóstico , Tomografia de Coerência Óptica , Endotélio Corneano/patologia , Gonioscopia , Humanos , Cápsula do Cristalino/patologia , Masculino , Microscopia Acústica , Pessoa de Meia-Idade , Malha Trabecular/patologia , Acuidade VisualRESUMO
PURPOSE: To determine the effect of mitomycin C (MMC) on the corneal endothelium after primary pterygium surgery. METHODS: This prospective, interventional, nonrandomized, observer-masked study included 46 consecutive patients (51 eyes) with primary pterygium. The bare sclera technique with 1-minute application of 0.02% MMC intraoperatively was used in all cases. The follow-up period was 3 months. Preoperative and postoperative central corneal specular microscopy was performed. The endothelial cell density, coefficient of variation of cell size, and percentage of hexagonal cells were analyzed, and the corneal thickness was measured. RESULTS: The mean endothelial cell densities preoperatively and 3 months postoperatively were 2382.35 +/- 342.07 cells per square millimeter (range, 1020-3129) and 2385.02 +/- 356.83 cells per square millimeter (range, 1001-3151), respectively (P = 0.96). The mean coefficients of variation of cell size preoperatively and 3 months postoperatively were 34.31 +/- 5.62 (range, 22-49) and 35.29 +/- 7.50 (range, 22-55), respectively (P = 0.17). The mean percentages of hexagonal cells values preoperatively and 3 months postoperatively were 52.98 +/- 7.32 (range, 32-71) and 51.61 +/- 8.98 (range, 32-67), respectively (P = 0.48). The mean pachymetry measurements preoperatively and 3 months postoperatively were 506.65 +/- 36.87 microm (range, 411-583) and 502.08 +/- 41.33 microm (range, 411-593), respectively (P = 0.99). CONCLUSIONS: One intraoperative application of 0.02% MMC for 1 minute after primary pterygium surgery does not seem to cause substantial changes in the corneal endothelium at 3 months.