<?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>S2604-12272020000200077</article-id>
<article-id pub-id-type="doi">10.24875/rmo.m20000108</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hallazgos en la angiografía por tomografía de coherencia óptica en pacientes mexicanos con telangiectasias maculares tipo 2]]></article-title>
<article-title xml:lang="en"><![CDATA[Optical coherence tomography angiography findings in macular telangiectasia type 2 in Mexican patients]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brito-Sandoval]]></surname>
<given-names><![CDATA[Paola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Juárez]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Institución de Asistencia Privada Fundación Hospital Nuestra Señora de la Luz Departamento de Retina y Vítreo]]></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>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>94</volume>
<numero>2</numero>
<fpage>77</fpage>
<lpage>82</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2604-12272020000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2604-12272020000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2604-12272020000200077&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Describir por medio de la angiografía por tomografía de coherencia óptica (OCT-A) las características de los capilares perifoveales, plexos afectados y cambios de la retina neurosensorial en telangiectasias maculares idiopáticas y ver su relación con la agudeza visual.  Método: Estudio descriptivo y analítico, donde se realizaron OCT-A Heidelberg en pacientes diagnosticados con telangiectasias maculares tipo 2.  Resultados: Se estudiaron 43 ojos de 24 pacientes adultos. Edad promedio 60 años. El 80% bilateral. Pacientes diabéticos con agudeza visual significativamente peor (p &lt; 0.05). Según los cambios vasculares, se encontró en estadio 1 el 21%, en el 2 el 38%, en 3 el 32% y en el 4 el 9%. La localización más frecuente de los cambios vasculares en la OCT-A con respecto a la fóvea fueron temporales (63%), seguidos por superiores (19%). No hay relación entre cuadrante y agudeza visual (p = 0.25). La afección más frecuente fue el plexo profundo (94%). La morfología de los vasos en el sitio de la lesión fue un engrosamiento discreto, dilataciones, y en el 33% de los casos se observaron lesiones aneurismáticas, neovascularizaciones, en el 21% (el 55% de ellas fueron subclínicas y únicamente detectadas con OCT-A). No se encontró relación entre el grosor macular y la agudeza visual (p = 0.29).  Conclusiones: Encontramos pacientes en los diferentes estadios de la enfermedad. El 21% presentó enfermedad avanzada con neovascularización y el 55% presentó neovascularización subclínica, no detectable en fluorangiografía y OCT regular. El OCT-A es el estudio ideal para diagnosticar esta entidad sin necesidad de otros estudios.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Purpose: To describe the characteristics of perifoveal capillaries, the plexuses involved and changes of the neurosensory retina in idiopathic macular telangiectasia using optical coherence tomography angiography (OCT-A) and correlate these findings with visual acuity.  Method: Descriptive and analytical study. Heidelberg OCT-A was performed in patients diagnosed with Type 2 macular telangiectasia.  Results: A total of 43 eyes of 24 adult patients were studied. Average age was of 60 years, and 80% of the cases were bilateral. Diabetic patients had significantly worse visual acuity (p &lt; 0.05). Regarding vascular changes, we found 21% in Stage 1, 38% in Stage 2, 32% in Stage 3 and 9% in Stage 4. The most frequent location of vascular changes by OCT-A with respect to the fovea was temporal (63%), followed by superior (19%). There was no relationship between the affected quadrant and visual acuity (p = 0.25). The deep capillary plexus was affected in 94%. We found discrete thickening, dilated vessels and aneurysmal lesions. Twenty-one percent had neovascularization, 55% of these were subclinical and only detected by OCT-A. No relationship was observed between macular thickness and visual acuity (p = 0.29).  Conclusions: We found patients in different stages of the disease; 21% had advanced disease with neovascularization and 55% had subclinical neovascularization, not detectable by fluorescein angiography and regular OCT. OCT-A is the ideal study to diagnose this disorder without the need for further studies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Idiopática]]></kwd>
<kwd lng="es"><![CDATA[Mácula]]></kwd>
<kwd lng="es"><![CDATA[Telangiectasias]]></kwd>
<kwd lng="es"><![CDATA[Tomografía de coherencia óptica]]></kwd>
<kwd lng="en"><![CDATA[Idiopathic]]></kwd>
<kwd lng="en"><![CDATA[Macular]]></kwd>
<kwd lng="en"><![CDATA[Telangiectasia]]></kwd>
<kwd lng="en"><![CDATA[Optical coherence tomography]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Klein]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Blodi]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Meuer]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Myers]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Chew]]></surname>
<given-names><![CDATA[EY]]></given-names>
</name>
<name>
<surname><![CDATA[Klein]]></surname>
<given-names><![CDATA[BE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The prevalence of macular telangiectasia type 2 in the Beaver Dam Eye study]]></article-title>
<source><![CDATA[Am J Ophtalmol]]></source>
<year>2010</year>
<volume>150</volume>
<page-range>55-62</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sallo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Leung]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Mathenge]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Kyari]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Kuper]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Gilbert]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The prevalence of type 2 idiopathic macular telangiectasias in two African populations]]></article-title>
<source><![CDATA[Opthalmic Epidemiol]]></source>
<year>2012</year>
<volume>19</volume>
<page-range>185-9</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Green]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Quigley]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[De la Cruz]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Cohen]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Parafoveal retinal telangiectasias. Light and electron microscopy studies]]></article-title>
<source><![CDATA[Trans Ophthalmol Soc UK]]></source>
<year>1980</year>
<volume>100</volume>
<page-range>162-70</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gass]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Müller cell cone, an overlooked part of the anatomy of the fovea centralis:Hypotheses concerning its role in the pathogenesis of macular hole and retinoschisis]]></article-title>
<source><![CDATA[Arch Opthalmol]]></source>
<year>1999</year>
<volume>117</volume>
<page-range>660-73</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mansour]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Schachat]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Foveal avascular zone in idiopathic parafoveal telangiectasia]]></article-title>
<source><![CDATA[Ophthalmologica]]></source>
<year>1993</year>
<volume>207</volume>
<page-range>9-12</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gupta]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Gupta]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Dogra]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Agarwal]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optic coherence tomography findings in group 2ªidiopathic yuxtafoveolar telangiectasias]]></article-title>
<source><![CDATA[Ophthalmic Surg Laser Imaging]]></source>
<year>2005</year>
<volume>36</volume>
<page-range>482-6</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Carlo]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Romano]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Waheed]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Duker]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of optical coherence tomography angiography (OCTA)]]></article-title>
<source><![CDATA[Int J Retin Vitr]]></source>
<year>2015</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>5</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gass]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Blodi]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Idiopathic juxtafoveal telangiectasis. Update of classification and follow-up study]]></article-title>
<source><![CDATA[Ophthalmology]]></source>
<year>1993</year>
<volume>100</volume>
<page-range>1536-46</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thorell]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[An]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Durbin]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Laron]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Swept-Source OCT Angiography of Macular Telangiectasia Type 2]]></article-title>
<source><![CDATA[Ophthalmic Surgery, Lasers, and Imaging Retina]]></source>
<year>2014</year>
<volume>45</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>369-80</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Clemons]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Gillies]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Chew]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Bird]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Peto]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Figueroa]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Baseline characteristics of participants in the natural history study of macular telangiectasia MacTel Project Report No. 2]]></article-title>
<source><![CDATA[Ophthalmic Epidemiol]]></source>
<year>2010</year>
<volume>17</volume>
<page-range>66-73</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Spaide]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Klancnik]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Cooney]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Retinal Vascular Layer in Macular Telangiectasias Type 2 Imaged by Optical Coherence Tomographic Angiography]]></article-title>
<source><![CDATA[JAMA Ophthalmol]]></source>
<year>2015</year>
<volume>133</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>66-73</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gass]]></surname>
<given-names><![CDATA[JDM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Histological study presumed parafoveal telangiectasia]]></article-title>
<source><![CDATA[Retina]]></source>
<year>2000</year>
<volume>20</volume>
<page-range>266-7</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kuroda]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hirami]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Hata]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mandai]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Takahashi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kurimoto]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intraretinal hyperreflective foci on spectral-domain optical coherence tomographic images of patients with retinitis pigmentosa]]></article-title>
<source><![CDATA[Clin Ophthalmol]]></source>
<year>2014</year>
<volume>8</volume>
<page-range>435-40</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heeren]]></surname>
<given-names><![CDATA[TF]]></given-names>
</name>
<name>
<surname><![CDATA[Clemons]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Scholl]]></surname>
<given-names><![CDATA[HP]]></given-names>
</name>
<name>
<surname><![CDATA[Bird]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Holz]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Charbel Issa]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Progression of visión loss in macular telangiectasias type 2]]></article-title>
<source><![CDATA[Invest Ophthalmol Vis Sci]]></source>
<year>2015</year>
<volume>56</volume>
<page-range>3905-12</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Finger]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Charbel Issa]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Fimmers]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Holz]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Rubin]]></surname>
<given-names><![CDATA[GS]]></given-names>
</name>
<name>
<surname><![CDATA[Scholl]]></surname>
<given-names><![CDATA[HP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reading performance is reduced by parafoveal escotomas in macular telangiectasia type 2]]></article-title>
<source><![CDATA[Invest Ophthalmol Vis Sci]]></source>
<year>2009</year>
<volume>50</volume>
<page-range>1366-70</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Runkle]]></surname>
<given-names><![CDATA[AP]]></given-names>
</name>
<name>
<surname><![CDATA[Kaiser]]></surname>
<given-names><![CDATA[PK]]></given-names>
</name>
<name>
<surname><![CDATA[Srivastava]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Schachat]]></surname>
<given-names><![CDATA[AP]]></given-names>
</name>
<name>
<surname><![CDATA[Reese]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Ehlers]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[OCT Angiography and Ellipsoid Zone Mapping of Macular Telangiectasia Type 2 From AVATAR Study]]></article-title>
<source><![CDATA[Invest Ophthalmol Vis Sci]]></source>
<year>2017</year>
<volume>58</volume>
<page-range>3683-9</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Charbel Issa]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Gillies]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Chew]]></surname>
<given-names><![CDATA[EY]]></given-names>
</name>
<name>
<surname><![CDATA[Bird]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Heeren]]></surname>
<given-names><![CDATA[TF]]></given-names>
</name>
<name>
<surname><![CDATA[Peto]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Macular telangiectasias type 2]]></article-title>
<source><![CDATA[Prog Retin Eyes Res]]></source>
<year>2013</year>
<volume>34</volume>
<page-range>49-77</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
