RESUMO
OBJECTIVE: The aim of this study was to compare sonoelastographic findings in the retina-choroid-sclera (RCS) complex and vitreous in glaucomatous and healthy eyes. METHODS: For this cross-sectional comparative study, 20 patients with primary open-angle glaucoma and 20 healthy volunteers were recruited. Ultrasound elastography measurements were taken with a sonographic scanner of the RCS complex, anterior vitreous (AV), posterior vitreous (PV), retrobulbar fat tissue (RFT), optic disc (OD) and optic nerve (ON) in each eye. RESULTS: The elasticity index of the RCS complex, RFT, OD, ON, AV and PV was similar in both groups (p > 0.05), although the AV/PV strain ratio in the group of patients with glaucoma was significantly higher (p = 0.04). CONCLUSION: Glaucoma increases the AV/PV strain ratio. In providing reproducible and consistent values, the real-time elastography (RTE) technique may be helpful in elucidating the mechanisms of glaucoma in some aspects. ADVANCES IN KNOWLEDGE: This study can help to evaluate the elasticity of the RCS complex and vitreous in glaucomatous eyes with RTE.
Assuntos
Glaucoma de Ângulo Aberto/diagnóstico por imagem , Adulto , Idoso , Estudos de Casos e Controles , Corioide/fisiologia , Estudos Transversais , Elasticidade , Técnicas de Imagem por Elasticidade/métodos , Feminino , Glaucoma de Ângulo Aberto/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Disco Óptico/efeitos dos fármacos , Nervo Óptico/fisiologia , Retina/fisiologia , Esclera/fisiologia , Corpo Vítreo/fisiologiaRESUMO
BACKGROUND: Our aim was to investigate the impact of allergic rhinoconjunctivitis on corneal and lenticular optical densitometry, pachymetry and anterior chamber depth in children. METHODS: Fifty-four patients who had allergic rhinoconjunctivitis (study group) and 54 age-matched healthy children (control group) were recruited in this cross-sectional and comparative study. Corneal and lenticular optical densitometry, pachymetry, corneal volume and anterior chamber depth measurements were taken with the Scheimpflug imaging system. RESULTS: The lens density and anterior chamber depth were similar between the groups (p > 0.05), while corneal density and thickness were significantly higher in the study group (p < 0.05). Although the corneal volume was higher in children with allergic rhinoconjunctivitis, the difference was not statistically significant (p = 0.07). CONCLUSIONS: The cornea is affected in allergic rhinoconjunctivitis in respect to optical density and thickness, while the anterior chamber and lens are not influenced.
