{"id":159,"date":"2018-05-05T00:11:00","date_gmt":"2018-05-05T00:11:00","guid":{"rendered":"https:\/\/arisvisionmexico.com\/cdmx\/index.php\/2018\/05\/05\/por-que-los-astronautas-pierden-la-vista-cuando-estan-en-el-espacio-2a-parte\/"},"modified":"2022-04-19T07:26:37","modified_gmt":"2022-04-19T07:26:37","slug":"por-que-los-astronautas-pierden-la-vista-cuando-estan-en-el-espacio-2a-parte","status":"publish","type":"post","link":"https:\/\/arisvisionmexico.com\/cdmx\/2018\/05\/por-que-los-astronautas-pierden-la-vista-cuando-estan-en-el-espacio-2a-parte\/","title":{"rendered":"\u00bfPor qu\u00e9 los astronautas pierden la vista cuando est\u00e1n en el espacio?&#8230; 2\u00aa parte"},"content":{"rendered":"<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">El problema de la p\u00e9rdida de visi\u00f3n de los astronautas comenz\u00f3 a ser un misterio. Por ello, expertos y cient\u00edficos no relacionados directamente con la NASA, pero s\u00ed de otras instituciones y organismos se interesaron por el tema. Uno de ellos, Noam Alperin, Profesor de Radiolog\u00eda e Ingenier\u00eda Biom\u00e9dica de la Universidad de Miami, dio finalmente con la causa del problema, el l\u00edquido cefalorraqu\u00eddeo y, concretamente, su incremento en determinadas \u00e1reas del cerebro durante las misiones espaciales.<o:p><\/o:p><\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">El l\u00edquido cefalorraqu\u00eddeo sirve, entre otras cosas, para amortiguar la presi\u00f3n intracraneal producida en el cuerpo humano, por ejemplo, ante cambios de postura. Los cient\u00edficos decidieron comprobar los cambios que se produc\u00edan en este l\u00edquido en los astronautas que pasaban largos periodos de tiempo en el espacio. As\u00ed, a la vuelta de una de las misiones, los investigadores llevaron a cabo escaneos de alta resoluci\u00f3n en 7 astronautas y comprobaron que, efectivamente, la hip\u00f3tesis se cumpl\u00eda, ya que todos ellos presentaban des\u00f3rdenes en el l\u00edquido cefalorraqu\u00eddeo.<o:p><\/o:p><\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><\/div>\n<div style=\"clear: both; text-align: center;\"><a href=\"https:\/\/2.bp.blogspot.com\/-MvGE1RatkeI\/WujueV4kWDI\/AAAAAAAABjc\/_e_CMHrGrfEGp65tYj2mLYXtmFgKTFCdACLcBGAs\/s1600\/Pueden-los-astronautas-oir-en-el-espacio-2.jpg\" style=\"margin-left: 1em; margin-right: 1em;\"><img loading=\"lazy\" decoding=\"async\" border=\"0\" data-original-height=\"524\" data-original-width=\"793\" height=\"211\" src=\"https:\/\/2.bp.blogspot.com\/-MvGE1RatkeI\/WujueV4kWDI\/AAAAAAAABjc\/_e_CMHrGrfEGp65tYj2mLYXtmFgKTFCdACLcBGAs\/s320\/Pueden-los-astronautas-oir-en-el-espacio-2.jpg\" width=\"320\"><\/a><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">M\u00e1s concretamente, demostraron que las cavidades del cr\u00e1neo donde se ubican los ojos presentaban un volumen mayor de lo normal de este l\u00edquido, lo que causaba el aumento de la presi\u00f3n ocular que, a su vez, daba lugar al aplanamiento de la parte posterior de los globos oculares y al da\u00f1o del nervio \u00f3ptico. La consecuencia de todo esto, del mismo modo que en algunos tipos de glaucoma, la p\u00e9rdida de visi\u00f3n irreversible.<o:p><\/o:p><\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">Un problema actualmente sin soluci\u00f3n<o:p><\/o:p><\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">El misterio fue finalmente resuelto, el problema es que no existe una soluci\u00f3n, por el momento, que pueda evitar estos da\u00f1os en la visi\u00f3n en futuras misiones espaciales. Es m\u00e1s, si el origen de esta presi\u00f3n intracraneal hubiera sido de fluidos vasculares en movimiento, como se pens\u00f3 en un principio, la soluci\u00f3n habr\u00eda sido sencilla. Se habr\u00eda podido utilizar m\u00e9todos para hacer que estos fluidos no se desplazaran de las piernas de los astronautas a la zona del cerebro, pero para el caso del l\u00edquido cefalorraqu\u00eddeo y su desorden en estado de ingravidez, no existe hoy en d\u00eda soluci\u00f3n. A pesar de ello, los cient\u00edficos siguen estudiando la forma de evitar el problema.<o:p><\/o:p><\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\"><br \/>\n<\/span><\/div>\n<div style=\"text-align: justify; text-justify: inter-ideograph;\"><span style=\"color: #333333; font-family: &quot;tahoma&quot; , sans-serif; mso-fareast-font-family: Tahoma;\">Con informaci\u00f3n de&#8230;&nbsp;<\/span><span style=\"color: #444444; font-family: &quot;roboto&quot; , &quot;helvetica&quot; , &quot;arial&quot; , sans-serif; font-size: 13px;\">https:\/\/goo.gl\/LihWxr<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>El problema de la p\u00e9rdida de visi\u00f3n de los astronautas comenz\u00f3 a ser un misterio. Por ello, expertos y cient\u00edficos no relacionados directamente con la NASA, pero s\u00ed de otras instituciones y organismos se interesaron por el tema. Uno de ellos, Noam Alperin, Profesor de Radiolog\u00eda e Ingenier\u00eda Biom\u00e9dica de la Universidad de Miami, dio [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-159","post","type-post","status-publish","format-standard","hentry","category-atencion-y-cuidado"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/posts\/159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/comments?post=159"}],"version-history":[{"count":2,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/posts\/159\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/posts\/159\/revisions\/1825"}],"wp:attachment":[{"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/media?parent=159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/categories?post=159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arisvisionmexico.com\/cdmx\/wp-json\/wp\/v2\/tags?post=159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}