<?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>2304-0106</journal-id>
<journal-title><![CDATA[Anales de la Academia de Ciencias de Cuba]]></journal-title>
<abbrev-journal-title><![CDATA[Anales de la ACC]]></abbrev-journal-title>
<issn>2304-0106</issn>
<publisher>
<publisher-name><![CDATA[Academia de Ciencias de Cuba]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2304-01062023000200017</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Extracción precoz del cristalino para el control de la presión intraocular en cierre angular primario]]></article-title>
<article-title xml:lang="en"><![CDATA[Early lens extraction to control intraocular pressure 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>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>13</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2304-01062023000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2304-01062023000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2304-01062023000200017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La iridotomía periférica láser se considera como primera línea de tratamiento del cierre angular primario; aunque, puede existir progresión de la enfermedad. La extracción del cristalino transparente se plantea si existe presión intraocular mayor o igual que 30 mm Hg o daño por glaucoma; sin embargo, se desconocen los aspectos relacionados con la estabilidad en el tiempo de la presión intraocular y la repercusión en la progresión de la enfermedad. El objetivo fue evaluar la efectividad de la extracción precoz del cristalino para el control de la presión intraocular como método de prevención del daño glaucomatoso en pacientes con cierre angular primario.  Métodos:  Se realizó un estudio cuasiexperimental, entre enero de 2013 y enero de 2020; incluyó 78 ojos de 78 pacientes con cierre angular primario tratados con extracción precoz del cristalino (grupo FACO) y 118 ojos de 66 pacientes tratados con iridotomía periférica láser en un periodo previo de 2 años (grupo IPL, control histórico). Para el análisis estadístico se empleó chi cuadrado de independencia, probabilidad exacta de Fisher, el análisis de varianza de medidas repetidas y pruebas no paramétricas; con significación estadística del 95 %.  Resultados:  Hubo mayor control de la presión intra ocular con estabilidad en el tiempo, independientemente de los valores preoperatorios, en el grupo FACO; con menor necesidad de medicamentos hipotensores oculares y de otros tratamientos. En ojos tratados con IPL se constataron diferencias entre el control de la presión intraocular y los valores preoperatorios para ambos ojos. En 5 años, la progresión de la enfermedad mostró diferencias estadísticamente muy significativas (p &lt; 0,001) entre ambos grupos. Como conclusiones, la extracción precoz del cristalino es una opción quirúrgica efectiva para el control de la presión intraocular como método de prevención del daño glaucomatoso en pacientes con cierre angular primario.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  laser peripheral iridotomy is considered the first line of treatment for primary angle closure; although, there may be progression of the disease. Clear lens extraction is considered if there is intraocular pressure greater than or equal to 30 mm Hg or glaucoma damage; however, the aspects related to intraocular pressure stability over time and the impact on disease progression are unknown. The objective was to evaluate the effectiveness of early lens extraction for intraocular pressure control as a method of preventing glaucomatous damage in patients with primary angle closure.  Methods:  it was carried out a quasi-experimental study between January 2013 and January 2020; the study included 78 eyes of 78 patients with primary angle closure treated with early lens extraction (PHACO group) and 118 eyes of 66 patients treated with laser peripheral iridotomy in a previous two-year period (LPI group, historical control). For the statistical analysis, they were used Chi-square test of independence, Fisher's exact probability, analysis of variance of repeated measures and non-parametric tests; with statistical significance of 95%.  Results:  there was greater IOP control with stability over time, regardless of preoperative values in the PHACO group, where there was less need for ocular hypotensive medications and other treatments. In eyes treated with LPI, they were found differences between IOP control and preoperative values for both eyes. In five years, the progression of the disease showed highly significant statistical differences (p &lt; 0,001) between both groups. Conclusions: early extraction of the lens is an effective surgical option for the control of intraocular pressure as a method of preventing glaucomatous damage in patients with primary angle closure.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[presión intraocular]]></kwd>
<kwd lng="es"><![CDATA[cierre angular primario]]></kwd>
<kwd lng="es"><![CDATA[cristalino]]></kwd>
<kwd lng="es"><![CDATA[facoemulsificación]]></kwd>
<kwd lng="es"><![CDATA[terapia por láser]]></kwd>
<kwd lng="en"><![CDATA[intraocular pressure]]></kwd>
<kwd lng="en"><![CDATA[primary angle closure]]></kwd>
<kwd lng="en"><![CDATA[lens, crystalline]]></kwd>
<kwd lng="en"><![CDATA[phacoemulsification]]></kwd>
<kwd lng="en"><![CDATA[laser therapy]]></kwd>
</kwd-group>
</article-meta>
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