<?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>0864-2176</journal-id>
<journal-title><![CDATA[Revista Cubana de Oftalmología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Oftalmol]]></abbrev-journal-title>
<issn>0864-2176</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-21762020000300006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sensibilidad al contraste en un grupo de diabéticos mexicanos]]></article-title>
<article-title xml:lang="en"><![CDATA[Contrast sensitivity in a group of Mexican diabetics]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Mercado]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villamar Martínez]]></surname>
<given-names><![CDATA[Luis Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Corzo Buenrostro]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez Cerda]]></surname>
<given-names><![CDATA[Sabino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Sánchez]]></surname>
<given-names><![CDATA[Anabel Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>33</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-21762020000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-21762020000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-21762020000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  Comparar la sensibilidad al contraste evaluada en un grupo de mexicanos con diabetes mellitus contra uno sin diabetes como control.  Métodos:  Un total de 31 voluntarios, 14 participantes con DM con un tiempo de diagnóstico entre 2 y 20 años (sin retinopatía diabética), y 17 en el grupo control iniciaron el estudio; 4 diabéticos y 5 no diabéticos fueron excluidos por no cumplir con los criterios de inclusión. Por lo tanto, los datos analizados fueron de un grupo de 10 diabéticos (52 ± 10 años) y otro de 12 no diabéticos (52 ± 6 años). Se evaluó la sensibilidad al contraste con la cartilla Vector Vision CSV1000E a una distancia de 2,5 metros con una iluminación de 85 cd/m2.  Resultados:  Un mayor porcentaje de ojos diabéticos alcanzaron un mejor umbral de contraste en 3, 6 y 18 ciclos por grado en comparación con el grupo control. En 12 ciclos por grado solamente en los umbrales 1 y 5.  Conclusiones: La sensibilidad al contraste de la población mexicana con diabetes mellitus presenta mejor percepción de contraste en las frecuencias evaluadas que el grupo control.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  Compare contrast sensitivity as measured in a group of Mexican diabetes mellitus patients versus a control non-diabetic group.  Methods:  A group of 31 volunteers, 14 participants with DM with a diagnosis time between 2 and 20 years (without diabetic retinopathy), and 17 in the control group started the study; 4 diabetics and 5 non-diabetics were excluded because they did not meet the inclusion criteria. Therefore, the data analyzed were from a group of 10 diabetics (52 ± 10 years) and another of 12 non-diabetics (52 ± 6 years). Contrast sensitivity was evaluated with a Vector Vision CSV1000E chart at a distance of 2.5 meters and a luminance of 85 cd/m2.  Results:  A higher percentage of diabetic eyes reached a better contrast threshold at 3, 6 and 18 cycles per degree in comparison with the control group. At 12 cycles per degree only at thresholds 1 and 5.  Conclusions: Contrast sensitivity in the Mexican population with diabetes mellitus displays better contrast perception at the frequencies evaluated than the control group.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sensibilidad al contraste]]></kwd>
<kwd lng="es"><![CDATA[diabetes mellitus]]></kwd>
<kwd lng="es"><![CDATA[umbral de contraste]]></kwd>
<kwd lng="es"><![CDATA[cd/m2]]></kwd>
<kwd lng="en"><![CDATA[Contrast sensitivity]]></kwd>
<kwd lng="en"><![CDATA[diabetes mellitus]]></kwd>
<kwd lng="en"><![CDATA[contrast threshold]]></kwd>
<kwd lng="en"><![CDATA[cd/m2]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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