<?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>1729-519X</journal-id>
<journal-title><![CDATA[Revista Habanera de Ciencias Médicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev haban cienc méd]]></abbrev-journal-title>
<issn>1729-519X</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de la Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1729-519X2021000400009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Presión intraocular preoperatoria en el control del cierre angular primario tratado con extracción del cristalino]]></article-title>
<article-title xml:lang="en"><![CDATA[Preoperative intraocular pressure for the control of primary angle closure treated with clear lens extraction]]></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[Barbeito]]></surname>
<given-names><![CDATA[Teddy Osmin Tamargo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Concha]]></surname>
<given-names><![CDATA[Yanet Garcia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General Docente &#8220;Abel Santamaría Cuadrado&#8221;  ]]></institution>
<addr-line><![CDATA[Pinar del Río ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Cubano de Oftalmología &#8220;Ramón Pando Ferrer&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Clínico Quirúrgico &#8220;Hermanos Ameijeiras&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>20</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1729-519X2021000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1729-519X2021000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1729-519X2021000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: la extracción del cristalino transparente en pacientes con cierre angular primario se plantea si existe presión intraocular mayor o igual que 30 mm Hg o daño por glaucoma. En ojos con elevación moderada de la presión intraocular se desconocen los resultados.  Objetivo:  evaluar la influencia de la presión intraocular preoperatoria en el control del cierre angular primario tratado con extracción del cristalino transparente.  Material y Métodos:  se realizó un estudio pre-experimental, entre enero de 2013 y enero de 2020, incluyó 78 ojos de 78 pacientes con cierre angular primario tratados con extracción del cristalino transparente; divididos en dos grupos según presión intraocular preoperatoria. Para el análisis estadístico se empleó chi cuadrado de independencia, probabilidad exacta de Fisher, prueba t para muestras independientes y análisis de varianza de medidas repetidas; con significación estadística del 95 %.  Resultados:  hubo diferencias significativas entre ambos grupos para longitud axial (p=0,003), grosor del cristalino (p&lt;0,001) y espesor corneal central (p=0,016). La presión intraocular y número de colirios, variaron de forma muy significativa (p&lt;0,001) entre el pre y posoperatorio, y entre ambos grupos en los diferentes momentos analizados. En el grupo A el 94,4 % de los ojos mostró control absoluto posoperatorio invariable en el tiempo, en el grupo B la mayoría de los ojos tuvo control relativo con diferencias muy significativas (p&lt;0,001) entre ambos.  Conclusiones:  la presión intraocular preoperatoria influye en el control del cierre angular primario tratado con extracción del cristalino transparente; valores previos menores que 30 mm Hg, propician mejor control posoperatorio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Clear lens extraction is considered in patients older than 50 years with primary angle closure and intraocular pressure greater than or equal to 30 mm Hg or damage due to glaucoma. The results are unknown in eyes with a moderate elevation of intraocular pressure.  Objective: To evaluate the influence of preoperative intraocular pressure in the control of the primary angle closure treated with clear lens extraction.  Material and Methods: A pre-experimental study was conducted between January 2013 and January 2020. It included a total of 78 eyes of 78 patients with primary angle closure treated with clear lens extraction. They were divided into two groups according to preoperative intraocular pressure. For statistical analysis, Chi-square test, Fisher's exact probability test, and t test were used for independent samples and analysis of variance with repeated measurements; with 95 % statistical significance.  Results: There were significant differences in axial length (p=0,003), lens thickness (p&lt;0,001) and central corneal thickness (p=0,016) between both groups. Intraocular pressure and the number of eye drops varied very significantly (p&lt;0,001) between the pre-and postoperative periods and between both groups at the different moments analyzed. In group A, 94,4 % of the eyes showed absolute postoperative control, which remained unchanged over time. In group B, most eyes had relative control. There were very significant differences (p&lt;0,001) between both groups.  Conclusions: Preoperative intraocular pressure influences the control of primary angle closure treated with clear lens extraction; previous values less than 30 mm Hg favor better postoperative control.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[presión intraocular]]></kwd>
<kwd lng="es"><![CDATA[cierre angular primario]]></kwd>
<kwd lng="es"><![CDATA[facoemulsificación]]></kwd>
<kwd lng="es"><![CDATA[cristalino]]></kwd>
<kwd lng="es"><![CDATA[cámara anterior]]></kwd>
<kwd lng="es"><![CDATA[soluciones oftálmicas]]></kwd>
<kwd lng="en"><![CDATA[Intraocular pressure]]></kwd>
<kwd lng="en"><![CDATA[Primary Angle Closure]]></kwd>
<kwd lng="en"><![CDATA[Phacoemulsification]]></kwd>
<kwd lng="en"><![CDATA[Lens, Crystalline]]></kwd>
<kwd lng="en"><![CDATA[Anterior Chamber]]></kwd>
<kwd lng="en"><![CDATA[Ophthalmic Solutions]]></kwd>
</kwd-group>
</article-meta>
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