<?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>0864-2176</journal-id>
<journal-title><![CDATA[Revista Cubana de Oftalmología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Oftalmol]]></abbrev-journal-title>
<issn>0864-2176</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-21762023000200005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Densitometría corneal en el queratocono]]></article-title>
<article-title xml:lang="en"><![CDATA[Corneal Densitometry in Keratoconus]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dengtan]]></surname>
<given-names><![CDATA[Li]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jareño Ochoa]]></surname>
<given-names><![CDATA[Madelyn]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Rodríguez]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Meihe]]></surname>
<given-names><![CDATA[Liu]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Cubano de Oftalmología Ramón Pando Ferrer  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-21762023000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-21762023000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-21762023000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo: Evaluar la densitometría corneal en pacientes con queratocono.  Métodos: Se realizó un estudio observacional descriptivo de corte transversal que incluyó 90 pacientes con queratocono (grupo de estudio) y 30 estudiantes con córneas aparentemente sanas (grupo control), que asistieron a la consulta de córnea del Instituto Cubano de Oftalmología Ramón Pando Ferrer, entre mayo del 2018 y junio del 2019. Se seleccionó el ojo derecho de cada caso. Se analizaron densitometría corneal con el tomógrafo corneal Pentacam AXL.  Resultados: La densitometría fue mayor en el queratocono respecto a la córnea aparentemente sana, de 0 a 2 mm, en la capa anterior, central, y posterior, respectivamente (p &lt; 0,001). La densitometría aumentó en los 0 a 2 mm en la capa anterior en el grupo moderado y en el grupo avanzado (p &lt; 0,001), y entre los 2-6 mm en la capa central, de 10,86 ± 0,54 en el control, en el queratocono avanzado a 12,35 ± 1,16 y en el moderado a 12,16 ± 1,45 (p &lt; 0,001). La densitometría aumentó en el avanzado de 27,64 ± 3,81, de 22,77 ± 2,14 en el leve, y de 24,04 ± 2,83 en el moderado y en los 0-2 mm, en la capa anterior.  Conclusiones:  La densitometría es mayor en la córnea queratocónica respecto a la córnea aparentemente sana, además que se incrementa al aumentar la gravedad del queratocono en el área central.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  To evaluate corneal densitometry in patients with keratoconus.  Methods:  A cross-sectional descriptive observational cross-sectional study was performed including 90 patients with keratoconus (study group) and 30 students with apparently healthy corneas (control group), who attended the cornea consultation at the Cuban Institute of Ophthalmology Ramón Pando Ferrer, between May 2018 and June 2019. The right eye of each case was selected. Corneal densitometry was analyzed with the Pentacam AXL corneal tomographer.  Results:  Densitometry was higher in keratoconus relative to apparently healthy cornea, from 0 to 2 mm, in the anterior, central, and posterior layer, respectively (p &lt; 0.001). Densitometry increased in the 0 to 2 mm in the anterior layer in the moderate group and in the advanced group (p &lt; 0.001), and between 2-6 mm in the central layer, from 10.86 ± 0.54 in the control, in the advanced keratoconus to 12.35 ± 1.16 and in the moderate to 12.16 ± 1.45 (p &lt; 0.001). Densitometry increased in advanced from 27.64 ± 3.81, from 22.77 ± 2.14 in mild, and from 24.04 ± 2.83 in the moderate and 0-2 mm, in the anterior layer.  Conclusions:  Densitometry is higher in the keratoconic cornea with respect to the apparently healthy cornea, moreover it increases with increasing severity of keratoconus in the central area.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[queratocono]]></kwd>
<kwd lng="es"><![CDATA[tomografía corneal]]></kwd>
<kwd lng="es"><![CDATA[Pentacam]]></kwd>
<kwd lng="es"><![CDATA[densitometría corneal]]></kwd>
<kwd lng="en"><![CDATA[keratoconus]]></kwd>
<kwd lng="en"><![CDATA[corneal tomography]]></kwd>
<kwd lng="en"><![CDATA[Pentacam]]></kwd>
<kwd lng="en"><![CDATA[corneal densitometry]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<collab>Chinese Corneal Disease Study Group of Chinese Ophthalmological Society, Chinese Medical Association</collab>
<article-title xml:lang=""><![CDATA[Expert consensus on diagnosis and treatment of keratoconus in China (2019)]]></article-title>
<source><![CDATA[Chinese Journal of Ophthalmology]]></source>
<year>2019</year>
<volume>55</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>891-5</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Khaled]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genetics of keratoconus]]></article-title>
<source><![CDATA[Genetics and Genomics of Eye Disease]]></source>
<year>2020</year>
<page-range>219-35</page-range><publisher-name><![CDATA[Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mas Tur]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[MacGregor]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Jayaswal]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8217;Brart]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Maycock]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of keratoconus: diagnosis, pathophysiology, and genetics]]></article-title>
<source><![CDATA[Surv Ophthalmol]]></source>
<year>2017</year>
<volume>62</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>770-83</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[Santodomingo-Rubido]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Carracedo]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Suzaki]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Villa-Collar]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Vincent]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
<name>
<surname><![CDATA[Wolffsohn]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Keratoconus: An updated review]]></article-title>
<source><![CDATA[Contact Lens and Anterior Eye]]></source>
<year>2022</year>
<volume>45</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jester]]></surname>
<given-names><![CDATA[JV]]></given-names>
</name>
<name>
<surname><![CDATA[Moller-Pedersen]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Sax]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Kays]]></surname>
<given-names><![CDATA[WT]]></given-names>
</name>
<name>
<surname><![CDATA[Cavangh]]></surname>
<given-names><![CDATA[HD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The cellular basis of corneal transparency: evidence for &#8216;corneal crystallins&#8217;]]></article-title>
<source><![CDATA[Journal of Cell Science]]></source>
<year>1999</year>
<volume>112</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>613-22</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[Otri]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Fares]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Al-Aqaba]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Dua]]></surname>
<given-names><![CDATA[HS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal Densitometry as an Indicator of Corneal Health]]></article-title>
<source><![CDATA[Ophthalmology]]></source>
<year>2012</year>
<volume>119</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>501-8</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[Anayol]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Sekeroglu]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Ceran]]></surname>
<given-names><![CDATA[BB]]></given-names>
</name>
<name>
<surname><![CDATA[Dogan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gunaydin]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Yilmazbas]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantitative Assessment of Corneal Clarity in Keratoconus: A Case Control Study of Corneal Densitometry]]></article-title>
<source><![CDATA[European Journal of Ophthalmology]]></source>
<year>2016</year>
<volume>26</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>18-23</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[Belin]]></surname>
<given-names><![CDATA[MW]]></given-names>
</name>
<name>
<surname><![CDATA[Meyer]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Duncan]]></surname>
<given-names><![CDATA[JK]]></given-names>
</name>
<name>
<surname><![CDATA[Gelman]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Borgstrom]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessing Progression of Keratoconus and Cross-linking Efficacy: The Belin ABCD Progression Display]]></article-title>
<source><![CDATA[International Journal of Keratoconus and Ectatic Corneal Diseases]]></source>
<year>2017</year>
<volume>6</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-10</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[Gutiérrez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Lopez]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Villa-Collar]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[González-Méijome]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal Transparency After Cross-linking for Keratoconus: 1-Year Follow-up]]></article-title>
<source><![CDATA[J Refract Surg]]></source>
<year>2012</year>
<volume>28</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>781-6</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[Gomes]]></surname>
<given-names><![CDATA[JAP]]></given-names>
</name>
<name>
<surname><![CDATA[Tan]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Rapuano]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Belin]]></surname>
<given-names><![CDATA[MW]]></given-names>
</name>
<name>
<surname><![CDATA[Ambrósio]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Guell]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Global Consensus on Keratoconus and Ectatic Diseases]]></article-title>
<source><![CDATA[Cornea]]></source>
<year>2015</year>
<volume>34</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>359-69</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[Patel]]></surname>
<given-names><![CDATA[SV]]></given-names>
</name>
<name>
<surname><![CDATA[McLaren]]></surname>
<given-names><![CDATA[JW]]></given-names>
</name>
<name>
<surname><![CDATA[Hodge]]></surname>
<given-names><![CDATA[DO]]></given-names>
</name>
<name>
<surname><![CDATA[Bourne]]></surname>
<given-names><![CDATA[WM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Effect of Corneal Light Scatter on Vision After Penetrating Keratoplasty]]></article-title>
<source><![CDATA[American Journal of Ophthalmology]]></source>
<year>2008</year>
<volume>146</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>913-9</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[Derivas]]></surname>
<given-names><![CDATA[MO]]></given-names>
</name>
<name>
<surname><![CDATA[Boned&#8208;Murillo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz&#8208;Barreda]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[El Bakkali]]></surname>
<given-names><![CDATA[IB]]></given-names>
</name>
<name>
<surname><![CDATA[Rivasés]]></surname>
<given-names><![CDATA[GP]]></given-names>
</name>
<name>
<surname><![CDATA[Moscarda]]></surname>
<given-names><![CDATA[EJN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry analysis in patients diagnosed with keratoconus]]></article-title>
<source><![CDATA[Acta Ophthalmologica]]></source>
<year>2022</year>
<volume>100</volume>
<numero>^s267</numero>
<issue>^s267</issue>
<supplement>267</supplement>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mounir]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Awny]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Yousef]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Mostafa]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Distribution of corneal densitometry in different grades of keratoconus]]></article-title>
<source><![CDATA[Indian J Ophthalmol]]></source>
<year>2023</year>
<volume>71</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jiménez-García]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ní Dhubhghaill]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Consejo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hershko]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Koppen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Rozema]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Scheimpflug Densitometry in Keratoconus: A New Method of Visualizing the Cone]]></article-title>
<source><![CDATA[Cornea]]></source>
<year>2021</year>
<volume>40</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>194-202</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[Mirzaei]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Taheri]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Akhlaghi]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Hashemi]]></surname>
<given-names><![CDATA[HS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry and its correlation with anterior and posterior elevation in keratoconus]]></article-title>
<source><![CDATA[Guoji Yanke Zazhi. Int Eye Sci]]></source>
<year>2018</year>
<volume>18</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>985-93</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[Mohammed]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
<name>
<surname><![CDATA[Waleed]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Mohamad]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Rania]]></surname>
<given-names><![CDATA[KF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry in different stages of keratoconus]]></article-title>
<source><![CDATA[Egyptian Journal of Ophthalmology (MOC)]]></source>
<year>2021</year>
<volume>1</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>91-102</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[Mengyu]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Lei]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Lili]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Zh]]></surname>
<given-names><![CDATA[Yang]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry analysis and its correlation with corneal topography in keratoconus]]></article-title>
<source><![CDATA[Opthalmol CHN]]></source>
<year>2020</year>
<volume>29</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>278-83</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dan]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Tianpu]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Weipin]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Na]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analysis of densitometry of keratoconus]]></article-title>
<source><![CDATA[J Invest Ophthalmol Vis Sci]]></source>
<year>2017</year>
<volume>37</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>450-4</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alzahrani]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Carley]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Brahma]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Morley]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Hillarby]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal clarity measurements in healthy volunteers across different age groups Observational study]]></article-title>
<source><![CDATA[Medicine]]></source>
<year>2017</year>
<volume>96</volume>
</nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Asrar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ikram]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Asrar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Normal Values of Corneal Optical Densitometry Using Pentacam Scheimpflug Camera]]></article-title>
<source><![CDATA[Adv Ophthalmol Vis Syst]]></source>
<year>2016</year>
<volume>5</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>00-142</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kreps]]></surname>
<given-names><![CDATA[EO]]></given-names>
</name>
<name>
<surname><![CDATA[Jimenez-Garcia]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Issarti]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Claerhout]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Koppen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Rozema]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Repeatability of the Pentacam HR in Various Grades of Keratoconus]]></article-title>
<source><![CDATA[American Journal of Ophthalmology]]></source>
<year>2020</year>
<volume>219</volume>
<page-range>154-62</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mathew]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
<name>
<surname><![CDATA[Goosey]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
<name>
<surname><![CDATA[Bergmanson]]></surname>
<given-names><![CDATA[JPG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantified histopathology of the keratoconic cornea]]></article-title>
<source><![CDATA[Optom Vis Sci]]></source>
<year>2011</year>
<volume>88</volume>
<page-range>988-97</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shen]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Jhanji]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Shang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Correlation Between Corneal Topographic, Densitometry, and Biomechanical Parameters in Keratoconus Eyes]]></article-title>
<source><![CDATA[Trans Vis Sci Tech]]></source>
<year>2019</year>
<volume>8</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schaub]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Gerber]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Adler]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Enders]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Schrittenlocher]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Heindl]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal Densitometry as a Predictive Diagnostic Tool for Visual Acuity Results After Descemet Membrane Endothelial Keratoplasty]]></article-title>
<source><![CDATA[American Journal of Ophthalmology]]></source>
<year>2019</year>
<volume>198</volume>
<page-range>124-9</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kenney]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Nesburn]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
<name>
<surname><![CDATA[Burgeson]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
<name>
<surname><![CDATA[Butkowski]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ljubimov]]></surname>
<given-names><![CDATA[AV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Abnormalities of the extracellular matrix in keratoconus corneas]]></article-title>
<source><![CDATA[Cornea]]></source>
<year>1997</year>
<volume>16</volume>
<page-range>345-51</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Garzón]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Poyales]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Larramendi]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Mendicute]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Jañez]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Caro]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry and its correlation with age, pachymetry, corneal curvature, and refraction]]></article-title>
<source><![CDATA[Int Ophthalmol]]></source>
<year>2017</year>
<volume>37</volume>
<page-range>1263-8</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Flockerzi]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Xanthopoulou]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Daas]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Feld]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Langenbucher]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Seitz]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of Dynamic Corneal Response Parameters and the Biomechanical E-Staging After Accelerated Corneal Cross-Linking in Keratoconus]]></article-title>
<source><![CDATA[Asia-Pacific Journal of Ophthalmology]]></source>
<year>2022</year>
<volume>11</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>514-20</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dong]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Jia]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corneal densitometry in high myopia]]></article-title>
<source><![CDATA[BMC Ophthalmology]]></source>
<year>2018</year>
<volume>18</volume>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
