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<article article-type="research-article" dtd-version="1.3" xml:lang="en">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>Czech and Slovak Ophthalmology</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">27</article-id>
      <article-categories>
        <subj-group>
          <subject>Original article</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Persistent hyaloid artery - Indication for surgery or not?</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Řeháková</surname>
            <given-names>Tereza</given-names>
          </name>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Stěpanov</surname>
            <given-names>Alexandr</given-names>
          </name>
          <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8462-8756</contrib-id>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Jirásková</surname>
            <given-names>Naďa</given-names>
          </name>
        </contrib>
      </contrib-group>
      <pub-date date-type="pub" publication-format="electronic">
        <day>30</day>
        <month>1</month>
        <year>2018</year>
      </pub-date>
      <issue>5+6</issue>
      <elocation-id>2</elocation-id>
      <abstract>
        <p>The review points to the issues of persistent hyaloid artery, more precisely to possible clinical features, the influence on visual functions and potential complications during intraocular surgeries. In professional journals we can find just few reviews regarding this rare deviation of the eye development, therefore we want to present our experience. The persistent hyaloid artery causes chronical local changes of eye background at both of our patients, retinal detachment and retinoschisis. The findings weren’t accompanied by significant decrease of visual functions or subjective patient’s complaints. Considering the potential complications published in journals such as hemoftalmus or retinal vessel occlusion we decided to be more conservative. That’s why we just checked-up the condition of the eye background and we were prepared to perform a surgery if necessary.</p>
      </abstract>
      <kwd-group>
        <kwd>persistent hyaloid artery</kwd>
        <kwd>tractional retinal detachment</kwd>
        <kwd>retinoschisis</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <back>
    <ref-list>
      <title>References</title>
      <ref id="R9040">
        <mixed-citation>Azrak, C., Campos-Mollo, E., Lledó- Riquelme, M. et al.: Vitreous haemor - rhage associated with persistent hyaloid artery. Arch Soc Esp Oftalmol. 2011; 86: 331-334.</mixed-citation>
      </ref>
      <ref id="R9041">
        <mixed-citation>Borbolla-Pertierra, A.M., Martínez- Hernández, C.K., Juárez-Echenique, J.C.: Bilateral persistent hyaloid artery. A case report. Arch Soc Esp Oftalmol. 2014; 89: 235-238.</mixed-citation>
      </ref>
      <ref id="R9042">
        <mixed-citation>Doménech-Aracil, N., Montero-Hernández, J., Gracia-García, A. et al.: Combined central retinal artery and vein occlusion secondary to cataract surgery in a patient with persistent hyaloid artery. Arch Soc Esp Oftalmol. 2014; 89: 161-164. Vitreous Hemorrhage From the Persistent Hyaloid Artery. Journal of AAPOS. 2000; 4: 190-191.</mixed-citation>
      </ref>
      <ref id="R9043">
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      </ref>
      <ref id="R9044">
        <mixed-citation>Gandorfer, A., Rohleder, M., Charteris, D. et al.: Ultrastructure of vitreomacular traction syndrome associated with persistent hyaloid artery. Eye . 2005; 19: 333- 336.</mixed-citation>
      </ref>
      <ref id="R9045">
        <mixed-citation>Gerinec A.: Detská oftalmólogia, Osveta, Martin, 2005, s. 25-26, 371-372.</mixed-citation>
      </ref>
      <ref id="R9046">
        <mixed-citation>Lai, A., Novel, A., Hung, S. et al.: Atypical Persistent hyloid Artery Remnant. Journal of the American Optometric Association. 2004; 75: 377.</mixed-citation>
      </ref>
      <ref id="R9047">
        <mixed-citation>Önder, F., Coşar, C.B., Gültan, E. et al.:</mixed-citation>
      </ref>
      <ref id="R9048">
        <mixed-citation>Štěpánková, J., Dotřelová, D.: Pars plana vitrektomie pro hemoftalmus na pod- kladě arteria hyaloidea persistens u tří dětí. Čes. a slov. Oftal. 2013; 69: 243- 247.</mixed-citation>
      </ref>
      <ref id="R9049">
        <mixed-citation>Taniguchi, H., Kitaoka, T., Gong, H. et al.: Apoptosis of the hyaloid artery in the rat eye. Ann Anat. 1999; 181: 555-560.</mixed-citation>
      </ref>
      <ref id="R9050">
        <mixed-citation>Thumann, G., Bartz-Schmidt, K.U., Kirchhof, B. et al.: Branch Retinal Artery Occlusion by Diathermy. American Journal of Ophathalmology. 1997; 124, 3: 415-416. media caused a risk of occurrence of amblyopia. In the case of repeated vitreous haemorrhage, some authors chose photocoagulation of the haemorrhaging artery as prevention of further recurrence (8, 9). CONCLUSION In our two case reports we wished to demonstrate that a finding of PHA adhering to the retinal blood vessels, where local changes occur in the sense of TRD or retinoschisis, need not immediately be indicated for a surgical solution. Both of our patients were no longer at risk of the development of amblyopia, the finding on the ocular fundus did not manifest signs of acute changes, and no more pronounced subjective complaints or deterioration of VA were present. Also with regard to the possible risks in connection with PPV for the relaxation of vitreretinal traction, even though these are stated only in rare cases in the</mixed-citation>
      </ref>
    </ref-list>
  </back>
</article>
