Así lo ha indicado el Dr. Nicholas J. Volpe, de la University of Pennsylvania School of Medicine (Estados Unidos), en la reunión anual de la American Academy of Ophthalmology, celebrada en Chicago.
El Dr. Volpe señaló que los efectos directos del cáncer pueden afectar la vista en diversos puntos. A través de proceso paraneoplásico, pueden alterar la función de nervio óptico y de la retina.
La pérdida de visión puede también asociarse con el tratamiento de las complicaciones por medio de radiación o quimioterapia.
Una metástasis aislada en el nervio óptico es extremadamente rara. La mayoría de los tumores metastásicos que afectan al nervio óptico son adenocarcinomas. Los pacientes con linfoma o leucemia pueden presentar infiltración de la cabeza del nervio óptico y lesiones en la órbita. Los tratamientos con radiación de estos pacientes son la causa principal de pérdida de visión.
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