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    <IdentifierDoi>10.3205/oc000244</IdentifierDoi>
    <IdentifierUrn>urn:nbn:de:0183-oc0002447</IdentifierUrn>
    <ArticleType>Case Report</ArticleType>
    <TitleGroup>
      <Title language="en">Pseudophakic corneal edema caused by Descemet membrane detachment using high-resolution swept-source OCT imaging</Title>
    </TitleGroup>
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      <Creator>
        <PersonNames>
          <Lastname>K&#246;ppe</Lastname>
          <LastnameHeading>K&#246;ppe</LastnameHeading>
          <Firstname>Maximilian K.</Firstname>
          <Initials>MK</Initials>
        </PersonNames>
        <Address>
          <Affiliation>University Eye Clinic Heidelberg, International Vision Correction Research Centre (IVCRC), Heidelberg, Germany</Affiliation>
        </Address>
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      <Creator>
        <PersonNames>
          <Lastname>Khoramnia</Lastname>
          <LastnameHeading>Khoramnia</LastnameHeading>
          <Firstname>Ramin</Firstname>
          <Initials>R</Initials>
        </PersonNames>
        <Address>University Eye Clinic Heidelberg, International Vision Correction Research Centre (IVCRC), Im Neuenheimer Feld 400, 69120 Heidelberg, Germany<Affiliation>University Eye Clinic Heidelberg, International Vision Correction Research Centre (IVCRC), Heidelberg, Germany</Affiliation></Address>
        <Email>ramin.khoramnia&#64;med.uni-heidelberg.de</Email>
        <Creatorrole corresponding="yes" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Auffarth</Lastname>
          <LastnameHeading>Auffarth</LastnameHeading>
          <Firstname>Gerd U.</Firstname>
          <Initials>GU</Initials>
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        <Address>
          <Affiliation>University Eye Clinic Heidelberg, International Vision Correction Research Centre (IVCRC), Heidelberg, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Augustin</Lastname>
          <LastnameHeading>Augustin</LastnameHeading>
          <Firstname>Victor A.</Firstname>
          <Initials>VA</Initials>
        </PersonNames>
        <Address>
          <Affiliation>University Eye Clinic Heidelberg, International Vision Correction Research Centre (IVCRC), Heidelberg, Germany</Affiliation>
        </Address>
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    <PublisherList>
      <Publisher>
        <Corporation>
          <Corporatename>German Medical Science GMS Publishing House</Corporatename>
        </Corporation>
        <Address>D&#252;sseldorf</Address>
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    <SubjectGroup>
      <SubjectheadingDDB>610</SubjectheadingDDB>
      <Keyword language="en">cataract surgery</Keyword>
      <Keyword language="en">Descemet membrane detachment</Keyword>
      <Keyword language="en">corneal edema</Keyword>
      <Keyword language="en">case report</Keyword>
    </SubjectGroup>
    <DatePublishedList>
      
    <DatePublished>20240923</DatePublished></DatePublishedList>
    <Language>engl</Language>
    <License license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
      <AltText language="en">This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License.</AltText>
      <AltText language="de">Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung).</AltText>
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    <SourceGroup>
      <Journal>
        <ISSN>2193-1496</ISSN>
        <Volume>14</Volume>
        <JournalTitle>GMS Ophthalmology Cases</JournalTitle>
        <JournalTitleAbbr>GMS Ophthalmol Cases</JournalTitleAbbr>
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    <ArticleNo>12</ArticleNo>
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    <Abstract language="en" linked="yes"><Pgraph><Mark1>Background:</Mark1> Small Descemet membrane detachments after cataract surgery are relatively common and most cases do not require any secondary surgical intervention and can be treated conservatively. However, in case of advanced Descemet membrane detachment (DMD), it needs to be recognized and treated appropriately. The advent of anterior segment imaging using optical coherence tomography (OCT) technology has made diagnosing pathologies of the anterior segment accurate and time efficient and has proven as an invaluable tool to guide decision making.</Pgraph><Pgraph><Mark1>Case presentation:</Mark1> A 71-year-old patient presented after complicated cataract surgery with decreased visual acuity and cloudy vision. On examination, best corrected visual acuity was 1.5 logMAR. A high-resolution swept-source OCT (Anterion, Heidelberg Engineering, Heidelberg, Germany) was used to better evaluate and visualize the extent of DMD. An anterior chamber gas bubble was injected to reattach the Descemet membrane (DM) to the corneal stroma. The success of the surgery was visualized using the high-resolution swept-source OCT. This revealed a completely attached Descemet membrane.</Pgraph><Pgraph><Mark1>Conclusions:</Mark1> Clinically, it can be difficult to distinguish the etiology of epithelial and stromal edema post cataract surgery. This case demonstrated the clinical usefulness using high resolution swept source imaging to guide clinical decision making in evaluating timing and treatment success of pneumodescemetopexy after complicated cataract surgery.</Pgraph></Abstract>
    <TextBlock linked="yes" name="Background">
      <MainHeadline>Background</MainHeadline><Pgraph>Clinically significant Descemet membrane detachment (DMD) with decreased visual acuity is relatively rare with a reported incidence of 0.044&#37; after cataract surgery <TextLink reference="1"></TextLink>. Visualizing DMD in specular microscopy can be difficult as it may only be a small detachment or examination is obscured by corneal edema. High resolution swept source optical coherence tomography (OCT) can serve as a quick and accurate diagnostic feature. DMD usually occurs during cataract surgery when aqueous enters the corneal stroma-Descemet membrane interface created by the corneal incisions. This can occur, for example, during irrigation-aspiration or stromal hydration <TextLink reference="1"></TextLink>. Ti and colleagues found preexisting endothelial disease as the only risk factor for DMD after cataract surgery <TextLink reference="2"></TextLink>.</Pgraph><Pgraph>For minor DMD conservative treatment including observation, topical steroids and hyperosmolar solutions can be an option <TextLink reference="3"></TextLink>. For larger DMD, such as in this case, pneumodescemetopexy with intracameral air or gas is the first surgical option mainly due to its ease of execution, rapid visual recovery and good safety profile <TextLink reference="2"></TextLink>. </Pgraph></TextBlock>
    <TextBlock linked="yes" name="Case description">
      <MainHeadline>Case description</MainHeadline><Pgraph>A 71-year-old patient presented after complicated cataract surgery with decreased visual acuity and cloudy vision. On examination, best corrected visual acuity was 1<TextGroup><PlainText>.5 lo</PlainText></TextGroup>gMAR. Slit-lamp examination revealed diffusely epithelial and stromal edema with Descemet folds centrally and DMD. A high-resolution swept-source OCT (Anterion, Heidelberg Engineering, Heidelberg, Germany) was used to better evaluate and visualize the extent of DMD. Figure 1 <ImgLink imgNo="1" imgType="figure"/> shows a slit-lamp image of the eye and Figure 2 <ImgLink imgNo="2" imgType="figure"/> shows the anterior segment OCT. The OCT shows a significantly centrally detached Descemet membrane (DM) towards the anterior chamber. Pre-operatively endothelial cell count could not be measured due to significant corneal edema. We decided to perform a complete anterior chamber air tamponade under topical anesthesia and eventually reduced the air bubble to 80&#37; anterior chamber volume after one hour. On the first day postoperatively, central corneal edema decreased, visual acuity improved to 0.30 logMAR and anterior segment OCT showed a fully attached Descemet membrane. Mean postoperative endothelial cell count after day 1 was 1,1<TextGroup><PlainText>49 cells</PlainText></TextGroup>&#47;mm<Superscript>2</Superscript>. After 3 months visual acuity further improved to 0.1 logMAR, with no central corneal edema (Figure 3 <ImgLink imgNo="3" imgType="figure"/>) and normal intraocular pressure. The OCT shows a fully attached DM (Figure 4 <ImgLink imgNo="4" imgType="figure"/>).</Pgraph></TextBlock>
    <TextBlock linked="yes" name="Discussion and conclusions">
      <MainHeadline>Discussion and conclusions</MainHeadline><Pgraph>Corneal edema after cataract surgery is a very common finding and is mostly self-limiting. However, in terms of persistent corneal edema it can be difficult to clinically distinguish the etiology of epithelial and stromal edema after cataract surgery. Even though DMD being a relatively rare postoperative complication after cataract surgery <TextLink reference="1"></TextLink>, this case report showed that it can cause significant reduction in visual acuity. Ti and colleagues suggested pneumodescemetopexy as the treatment of choice for large DMD <TextLink reference="2"></TextLink>. However, visualizing and evaluating the extent of DMD using specular microscopy as well as guiding surgical decision making can be very challenging.</Pgraph><Pgraph>This case demonstrated that high resolution swept source OCT serves as a quick and invaluable tool to facilitate visualizing the extent of DMD and to guide clinical decision making in evaluating timing and treatment success of pneumodescemetopexy after cataract surgery. This case also confirmed that large DMD can successfully be treated using anterior chamber air injection.</Pgraph></TextBlock>
    <TextBlock linked="yes" name="Notes">
      <MainHeadline>Notes</MainHeadline><SubHeadline>Availability of data and materials</SubHeadline><Pgraph>Data and materials are on file at University Eye Clinic Heidelberg, Germany.</Pgraph><SubHeadline>Consent for publication</SubHeadline><Pgraph>Written informed consent was obtained from the patient for publication of this case report and any accompanying images.</Pgraph><SubHeadline>Competing interests</SubHeadline><Pgraph>The authors declare that they have no competing interests.</Pgraph></TextBlock>
    <References linked="yes">
      <Reference refNo="1">
        <RefAuthor>Chow VW</RefAuthor>
        <RefAuthor>Agarwal T</RefAuthor>
        <RefAuthor>Vajpayee RB</RefAuthor>
        <RefAuthor>Jhanji V</RefAuthor>
        <RefTitle>Update on diagnosis and management of Descemet&#39;s membrane detachment</RefTitle>
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        <RefJournal>Curr Opin Ophthalmol</RefJournal>
        <RefPage>356-61</RefPage>
        <RefTotal>Chow VW, Agarwal T, Vajpayee RB, Jhanji V. Update on diagnosis and management of Descemet&#39;s membrane detachment. Curr Opin Ophthalmol. 2013 Jul;24(4):356-61. 
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        <RefLink>https:&#47;&#47;doi.org&#47;10.1097&#47;ICU.0b013e3283622873</RefLink>
      </Reference>
      <Reference refNo="2">
        <RefAuthor>Ti SE</RefAuthor>
        <RefAuthor>Chee SP</RefAuthor>
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        <RefAuthor>Yang YN</RefAuthor>
        <RefAuthor>Shuang SL</RefAuthor>
        <RefTitle>Descemet membrane detachment after phacoemulsification surgery: risk factors and success of air bubble tamponade</RefTitle>
        <RefYear>2013</RefYear>
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DOI: 10.1097&#47;ICO.0b013e318254c045</RefTotal>
        <RefLink>https:&#47;&#47;doi.org&#47;10.1097&#47;ICO.0b013e318254c045</RefLink>
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        <RefAuthor>Marcon AS</RefAuthor>
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        <RefPage>2325-30</RefPage>
        <RefTotal>Marcon AS, Rapuano CJ, Jones MR, Laibson PR, Cohen EJ. Descemet&#39;s membrane detachment after cataract surgery: management and outcome. Ophthalmology. 2002 Dec;109(12):2325-30. 
DOI: 10.1016&#47;s0161-6420(02)01288-5</RefTotal>
        <RefLink>https:&#47;&#47;doi.org&#47;10.1016&#47;s0161-6420(02)01288-5</RefLink>
      </Reference>
    </References>
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          <Caption><Pgraph><Mark1>Figure 1: Slit-lamp image of the corneal edema</Mark1></Pgraph></Caption>
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          <Caption><Pgraph><Mark1>Figure 2: High-resolution anterior segment OCT showing a significantly centrally detached Descemet membrane towards the anterior chamber</Mark1></Pgraph></Caption>
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          <Caption><Pgraph><Mark1>Figure 3: Slit-lamp image of the clear central cornea with no edema after surgery</Mark1></Pgraph></Caption>
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          <Caption><Pgraph><Mark1>Figure 4: High-resolution anterior segment OCT showing a fully attached Descemet membrane</Mark1></Pgraph></Caption>
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