diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/textbook.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/textbook.en.md
deleted file mode 100644
index 093007686..000000000
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/textbook.en.md
+++ /dev/null
@@ -1,4 +0,0 @@
----
-title: 'The eye'
----
-
diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.es.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.es.md
deleted file mode 100644
index 40a742512..000000000
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.es.md
+++ /dev/null
@@ -1,4 +0,0 @@
----
-title: 'Modelado simple del ojo'
----
-
diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.fr.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.fr.md
deleted file mode 100644
index 8cb31baff..000000000
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/04.eye/topic.fr.md
+++ /dev/null
@@ -1,4 +0,0 @@
----
-title: 'Une modélisation simple de l''oeil'
----
-