Astigmatism is a defect or imperfection in the eye curvature of the cornea or in the structure of the lens of the eye, characterized by a different eye refraction between two meridians, which prevents sharp focus objects. The cornea acts as a lens through which light passes that is focused on the retina. So that if the surface of the cornea is irregular in its curvature, astigmatism occurs because the light rays are not refracted properly. Low ( 0.25 diopters less than 1 ), medium (1 diopter less than 3 ) and high ( greater than or equal to 3 diopters ): According grades three types are classified.
Astigmatism
Astigmatism is a defect or imperfection in the eye curvature of the cornea or in the structure of the lens of the eye, characterized by a different eye refraction between two meridians, which prevents sharp focus objects. The cornea acts as a lens through which light passes that is focused on the retina. So that if the surface of the cornea is irregular in its curvature, astigmatism occurs because the light rays are not refracted properly. Low ( 0.25 diopters less than 1 ), medium (1 diopter less than 3 ) and high ( greater than or equal to 3 diopters ): According grades three types are classified.
Catarata y astigmatismo: pueden coexistir pero también solucionarse a la vez
By Dr. Salvador Nebro Cobos
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Más de un 25% de pacientes con cataratas también sufren astigmatismos superiores a 1,5 dioptrías. El Dr. Nebro, oftalmólogo, explica que, de la misma manera que coexisten, también pueden solucionarse a la vez, incluyendo una lente intraocular tórica. See more
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By Dr. Juan Antonio García de Oteyza
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Las lentes intraoculares sirven para poder corregir defectos refractivos. Estas lentes artificiales se implantan en uno o los dos ojos del paciente. Aactuará como el cristalino del ojo, que es el encargado de enfocar los rayos de luz para poder recibir imágenes nítidas. Actualmente, existen dos tipos de lentes intraoculares: las fáquicas y las pseudofáquicas. See more
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El Dr. Julián Cezón, especialista en Oftalmología, nos habla de la fatiga visual, los síntomas que provoca, qué la causa y consejos para prevenirla. See more
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This versatile intervention is possible thanks to the implantation of toric multifocal intraocular lens. A procedure which, today, is simple but is the result of many years of research and development in the field of ophthalmology. See more
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Avenida Nuestra Señora de Montserrat, 40
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Oftalvist Barcelona
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C/ Anglí, 40, 4ª planta, Barcelona
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Institut de la Còrnia i d'Oftalmologia
Institut de la Còrnia i d'Oftalmologia
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