<?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>S2604-12272021000200071</article-id>
<article-id pub-id-type="doi">10.24875/rmo.m20000149</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la trehalosa tópica al 3% en la velocidad de epitelización corneal en pacientes operados de queratectomía fotorrefractiva]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of 3% topical trehalose on the rate of corneal re-epithelialization in patients undergoing photorefractive keratectomy]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Haber]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Polania-Baron]]></surname>
<given-names><![CDATA[Eduardo J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Oftalmología Conde de Valenciana I.A.P. Departamento de Córnea, Enfermedades Externas y Cirugía Refractiva ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Aris Vision Institute  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>95</volume>
<numero>2</numero>
<fpage>71</fpage>
<lpage>75</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2604-12272021000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2604-12272021000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2604-12272021000200071&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Estudiar el cambio en la velocidad de epitelización corneal en pacientes sometidos a cirugía de queratectomía fotorrefractiva de superficie en los que se aplicó trehalosa al 3%.  Método: Se trata de un ensayo clínico prospectivo, aleatorizado y controlado. Los criterios de inclusión fueron ser mayor de 18 años, con criterios clínicos y topográficos para realizar cirugía refractiva, y aceptar participar en el protocolo. La asignación aleatoria se llevó a cabo para asignar a uno de los dos ojos de cada paciente para conformar el grupo control con el tratamiento convencional y el grupo de tratamiento con la instilación, además del tratamiento convencional, de trehalosa al 3%. Para cuantificar el área de desepitelización en milímetros cuadrados se utilizó el software libre de procesamiento de imágenes Image J.  Resultados: El promedio de días de epitelización en el grupo de casos fue de 2.984 días y en el grupo de control fue de 2.954 días (diferencia no estadísticamente significativa; p = 0.1624063). El área de desepitelización en la revisión previa a alcanzar el 100% de epitelización en el grupo de casos fue de 4.255 mm2 y en el grupo de control fue de 3.1762 mm2 (diferencia no estadísticamente significativa; p = 0.0899374).  Conclusiones: La trehalosa tópica al 3% no aumenta la velocidad de epitelización corneal en pacientes sometidos a queratectomía fotorrefractiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Purpose: To study the changes in corneal re-epithelialization rate in patients undergoing surface photorefractive keratectomy by using 3% trehalose.  Methods: This is a prospective, randomized, controlled clinical trial. The inclusion criteria were patients older than 18 years, with clinical and topographic criteria for refractive surgery, who agreed to participate in the protocol. Randomization was carried out to assign one eye of each patient to the control group with conventional treatment and the other eye to the experimental group with 3% trehalose plus conventional treatment. The free image processing software Image J was used to quantify the area of de-epithelialization in square millimeters.  Results: The average number of epithelialization days was of 2.984 days in the experimental group and of 2.954 days in the control group (not statistically significant; p = 0.1624063). The area of de-epithelialization in the examination prior to reaching 100% epithelialization was of 4.255 mm2 in the experimental group and 3.1762 mm2 in the control group (not statistically significant; p = 0.0899374).  Conclusions: Topical instillation of 3% trehalose does not increase the rate of corneal re-epithelialization in patients undergoing photorefractive keratectomy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Procedimientos quirúrgicos refractivos]]></kwd>
<kwd lng="es"><![CDATA[Queratectomía fotorrefractiva]]></kwd>
<kwd lng="es"><![CDATA[Reepitelización]]></kwd>
<kwd lng="es"><![CDATA[Trehalosa]]></kwd>
<kwd lng="en"><![CDATA[Refractive surgical procedures]]></kwd>
<kwd lng="en"><![CDATA[Photorefractive keratectomy]]></kwd>
<kwd lng="en"><![CDATA[Re-epithelialization]]></kwd>
<kwd lng="en"><![CDATA[Trehalose]]></kwd>
</kwd-group>
</article-meta>
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