<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2604-1227</journal-id>
<journal-title><![CDATA[Revista mexicana de oftalmología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. oftalmol]]></abbrev-journal-title>
<issn>2604-1227</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Oftalmología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2604-12272019000400178</article-id>
<article-id pub-id-type="doi">10.24875/rmo.m19000080</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Discapacidad visual y ceguera entre los estudiantes de una escuela para ciegos en Querétaro, México: una evaluación causal]]></article-title>
<article-title xml:lang="en"><![CDATA[Visual impairment and blindness in students of a school for the blind in Querétaro, México: A causal assessment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escárcega-Servín]]></surname>
<given-names><![CDATA[Rocío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Pérez]]></surname>
<given-names><![CDATA[J. Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lansingh]]></surname>
<given-names><![CDATA[Van Charles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lopez-Star]]></surname>
<given-names><![CDATA[Ellery M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano de Oftalmología IAP  ]]></institution>
<addr-line><![CDATA[Querétaro ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Help Me See  ]]></institution>
<addr-line><![CDATA[Nueva York ]]></addr-line>
<country>Estados Unidos</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>93</volume>
<numero>4</numero>
<fpage>178</fpage>
<lpage>184</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2604-12272019000400178&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2604-12272019000400178&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2604-12272019000400178&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Describir las causas de ceguera en los alumnos de la escuela para niños ciegos Josefa Vergara en Querétaro, México; así como identificar causas tratables en la población estudiada.  Metodología: El estudio se llevó a cabo en el periodo de diciembre de 2017 a febrero de 2018 en la escuela para niños ciegos Josefa Vergara de Querétaro, México. Participaron 30 estudiantes. Los pacientes fueron entrevistados y examinados por los autores. Los resultados obtenidos con el estudio fueron analizados con el programa SPSSMR versión 21.  Resultados: La mayoría de los sujetos eran ciegos (28, 93%). Las causas más frecuentes de pérdida visual fueron retinopatía del prematuro en 11 pacientes (36.7%) y catarata congénita en 5 pacientes (16.6%). En menor porcentaje se encontró amaurosis congénita de Leber, en 2 pacientes (6.7%), desprendimiento de retina congénito, en 2 pacientes (6.7%), retinoblastoma, en 2 pacientes (6.7%), hipoplasia del nervio óptico, en 2 pacientes (6.7%), entre otras. El 73% de los participantes en el estudio tenían una causa tratable de ceguera.  Conclusiones: La retina fue el principal sitio anatómico afectado. El diagnóstico más común fue secuelas de retinopatía del prematuro. La mayoría de los pacientes tenían alternativas de tratamiento que habrían podido evitar la ceguera en estadios tempranos de su enfermedad. Es necesario implementar y reforzar medidas en el sistema de salud mexicano para la prevención de ceguera en la población pediátrica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: To describe the causes of blindness in the students of the school for blind children "Josefa Vergara" in Querétaro, Mexico; as well as identifying treatable causes in the studied population.  Methodology: The study was conducted in the period from December 2017 to February 2018, at the school for blind children "Josefa Vergara" in Querétaro, Mexico. Thirty students participated. The patients were interviewed and examined by the authors. The results obtained in the study were analyzed with the SPSS&#8482; software version 21.  Results: The majority of subjects were blind 28 (93%). The most frequent causes of visual loss were retinopathy of prematurity in 11 patients (36.7%) and congenital cataract in 5 patients (16.6%). In a lower percentage, Leber&#8217;s congenital amaurosis was found in 2 patients (6.7%), congenital retinal detachment in 2 patients (6.7%), retinoblastoma in 2 patients (6.7%), optic nerve hypoplasia in 2 patients (6.7%), among others. 73% of the participants in the study had a treatable cause of blindness.  Conclusions: The retina was the main anatomical site affected. The most common diagnosis was sequelae of retinopathy of prematurity. Most patients had treatment alternatives that could prevent blindness in early stages of their disease. It is necessary to implement and intensify measures in the Mexican health system for the prevention of blindness in the pediatric population.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ceguera]]></kwd>
<kwd lng="es"><![CDATA[Infantil]]></kwd>
<kwd lng="es"><![CDATA[Escuela]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="es"><![CDATA[Incidencia]]></kwd>
<kwd lng="es"><![CDATA[Prevención]]></kwd>
<kwd lng="en"><![CDATA[Blindness]]></kwd>
<kwd lng="en"><![CDATA[Pediatric]]></kwd>
<kwd lng="en"><![CDATA[School]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[Incidence]]></kwd>
<kwd lng="en"><![CDATA[Prevention]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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