<?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>1684-1824</journal-id>
<journal-title><![CDATA[Revista Médica Electrónica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Med.Electrón.]]></abbrev-journal-title>
<issn>1684-1824</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de Matanzas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1684-18242022000100004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modificaciones del segmento anterior ocular tras extracción del cristalino versus iridotomía periférica láser en el cierre angular primario]]></article-title>
<article-title xml:lang="en"><![CDATA[Modifications of the ocular anterior segment after lens extraction versus peripheral laser iridotomy in primary angle closure]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-González]]></surname>
<given-names><![CDATA[Henry]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Silva]]></surname>
<given-names><![CDATA[Juan Raúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamargo-Barbeito]]></surname>
<given-names><![CDATA[Teddy Osmin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General Docente Abel Santamaría Cuadrado  ]]></institution>
<addr-line><![CDATA[ Pinar del Río]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Cubano de Oftalmología Ramón Pando Ferrer  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Clínico Quirúrgico Hermanos Ameijeiras  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<volume>44</volume>
<numero>1</numero>
<fpage>4</fpage>
<lpage>19</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1684-18242022000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1684-18242022000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1684-18242022000100004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  el tratamiento inicial para el cierre angular primario está dirigido a modificar el segmento anterior ocular y a estabilizar la enfermedad.  Objetivo:  evaluar si existen diferencias entre los pacientes tratados con facoemulsificación o iridotomía periférica láser, en cuanto a mejoría de los parámetros anatómicos del segmento anterior ocular.  Materiales y métodos:  se realizó un estudio cuasi experimental con un grupo de control histórico en la provincia Pinar del Río, entre enero de 2011 y enero de 2020. El mismo incluyó 196 ojos de 144 pacientes con cierre angular primario, tratados con facoemulsificación o iridotomía periférica láser. El análisis estadístico se realizó a través del programa SPSS.  Resultados:  en el preoperatorio no hubo diferencias significativas para la amplitud de la cámara anterior. En el postoperatorio sí existieron diferencias muy significativas (p &lt; 0,001) entre los dos procedimientos quirúrgicos para ambos ojos. En la amplitud angular también existieron diferencias muy significativas (p &lt; 0,001) entre el preoperatorio y el postoperatorio de ambos grupos. La presencia de sinequias anteriores periféricas fue escasa, sin diferencias entre los valores basales, y a los dos meses en ambos ojos para cada grupo. La evidencia de cierre angular, al final del período, entre el grupo de facoemulsificación y el de iridotomía, fue de 4,9 % vs. 23,2 % (p = 0,029) en el ojo derecho, y de 2,7 % vs. 29,0 % (p = 0,003) en el izquierdo.  Conclusiones:  tanto la extracción del cristalino como la iridotomía periférica láser mejoran los parámetros anatómicos del segmento anterior, aunque los resultados son superiores en ojos tratados con facoemulsificación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  initial treatment for the primary angle closure is aimed to modify the anterior ocular segment and to stabilize the disease.  Objective:  to assess if there are differences between patients treated with phacoemulsification or peripheral laser iridotomy, in terms of improvement of the anatomical parameters of the anterior ocular segment.  Materials and methods:  a quasi-experimental study was led with a historic control group in the province of Pinar del Rio, between January 2011 and January 2020. It included 196 eyes of 144 patients with primary angular closure, treated with phacoemulsification or laser peripheral iridotomy. The statistical analysis was carried out using SPSS program.  Results:  in the preoperative period there were not significant differences for the amplitude of the anterior chamber. In the postoperative there were very significant differences (p &lt; 0.001) between the two surgical procedures for both ayes. In angular amplitude there were also very significant differences (p &lt; 0.001) between preoperative y postoperative periods of both groups. The presence of peripheral anterior synechia was scarce, without differences between baseline values, and after two months in both eyes for each group. The evidence of angular closure, at the end of the period, between the phacoemulsification group and the iridotomy one was 4.9 % vs. 23.2 % (p = 0.029) in the right eye, and 2.7 % vs. 29.0 % (p = 0.003) in the left.  Conclusions:  both, crystalline lens extraction and laser peripheral iridotomy improve the anatomical parameters of the anterior segment, although the results are greater in ayes treated with phacoemulsification.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[facoemulsificación]]></kwd>
<kwd lng="es"><![CDATA[rayos láser]]></kwd>
<kwd lng="es"><![CDATA[ángulo estrecho]]></kwd>
<kwd lng="es"><![CDATA[cámara anterior]]></kwd>
<kwd lng="es"><![CDATA[glaucoma de ángulo cerrado]]></kwd>
<kwd lng="en"><![CDATA[phacoemulsification]]></kwd>
<kwd lng="en"><![CDATA[laser beams]]></kwd>
<kwd lng="en"><![CDATA[narrow angle]]></kwd>
<kwd lng="en"><![CDATA[anterior chamber]]></kwd>
<kwd lng="en"><![CDATA[closed angle glaucoma]]></kwd>
</kwd-group>
</article-meta>
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