Media type: E-Article Title: The tick sign – a new and simple test to diagnose keratoconus at the slit lamp Contributor: Gellrich, Marcus‐Matthias imprint: Wiley, 2019 Published in: Acta Ophthalmologica Language: English DOI: 10.1111/aos.13975 ISSN: 1755-375X; 1755-3768 Keywords: Ophthalmology ; General Medicine Origination: Footnote: Access State: Open Access