diff --git a/sksurgeryvtk/models/vtk_base_actor.py b/sksurgeryvtk/models/vtk_base_actor.py
index c08aeeb..f416855 100644
--- a/sksurgeryvtk/models/vtk_base_actor.py
+++ b/sksurgeryvtk/models/vtk_base_actor.py
@@ -78,6 +78,12 @@ def set_opacity(self, opacity):
 
         self.actor.GetProperty().SetOpacity(opacity)
 
+    def get_opacity(self):
+        """
+        Returns float [0-1].
+        """
+        return self.actor.GetProperty().GetOpacity()
+
     def set_visibility(self, visibility):
         """
         Sets the visibility.
diff --git a/tests/widgets/test_vtk_overlay_window_5_layers.py b/tests/widgets/test_vtk_overlay_window_5_layers.py
index b5d7fae..dc40ffc 100644
--- a/tests/widgets/test_vtk_overlay_window_5_layers.py
+++ b/tests/widgets/test_vtk_overlay_window_5_layers.py
@@ -123,6 +123,11 @@ def test_overlay_window_video_2(setup_vtk_overlay_window_video_only_layer_2):
     vtk_overlay.show()
     vtk_overlay.Render()
 
+    liver.set_opacity(0.4)
+    assert liver.get_opacity() == 0.4
+    liver.set_opacity(0.2)
+    assert liver.get_opacity() == 0.2
+
     bg_ren = vtk_overlay.get_background_renderer(layer=2)
     assert bg_ren == vtk_overlay.layer_2_renderer