diff --git a/src/common/session.cpp b/src/common/session.cpp
index a6fd7cd..6046a67 100644
--- a/src/common/session.cpp
+++ b/src/common/session.cpp
@@ -438,7 +438,7 @@ trance_pb::System get_default_system()
   system.set_enable_vsync(true);
   system.set_renderer(trance_pb::System::MONITOR);
   system.mutable_draw_depth()->set_draw_depth(.5f);
-  system.mutable_eye_spacing()->set_eye_spacing(.5f);
+  system.mutable_eye_spacing()->set_eye_spacing(1.f / 16);
   system.set_image_cache_size(64);
   system.set_animation_buffer_size(32);
   system.set_font_cache_size(8);
@@ -465,7 +465,7 @@ void validate_system(trance_pb::System& system)
     system.mutable_eye_spacing()->set_eye_spacing(1.f / 16);
   }
   system.mutable_eye_spacing()->set_eye_spacing(
-      std::max(0.f, std::min(1.f, system.eye_spacing().eye_spacing())));
+      std::max(-1.f, std::min(1.f, system.eye_spacing().eye_spacing())));
   system.set_image_cache_size(std::max(16u, system.image_cache_size()));
   system.set_animation_buffer_size(std::max(8u, system.animation_buffer_size()));
   system.set_font_cache_size(std::max(2u, system.font_cache_size()));
diff --git a/src/creator/settings.cpp b/src/creator/settings.cpp
index 6ee6b7d..ad9d8d7 100644
--- a/src/creator/settings.cpp
+++ b/src/creator/settings.cpp
@@ -56,7 +56,8 @@ namespace
 
   const std::string EYE_SPACING_TOOLTIP =
       "Distance between the view for each eye in VR. Adjust this if the 3D effects are "
-      "out-of-sync or difficult to focus on. The default value is .0625.";
+      "out-of-sync or difficult to focus on. This can also be made negative to correct "
+      "problems where the left and right eyes are swapped. The default value is .0625.";
 }
 
 SettingsFrame::SettingsFrame(CreatorFrame* parent, trance_pb::System& system)
@@ -123,7 +124,7 @@ SettingsFrame::SettingsFrame(CreatorFrame* parent, trance_pb::System& system)
   _font_cache_size->SetValue(_system.font_cache_size());
   _draw_depth->SetToolTip(DRAW_DEPTH_TOOLTIP);
   _eye_spacing->SetToolTip(EYE_SPACING_TOOLTIP);
-  _eye_spacing->SetRange(0., 1.);
+  _eye_spacing->SetRange(-1., 1.);
   _eye_spacing->SetIncrement(1. / 128);
   _eye_spacing->SetValue(_system.eye_spacing().eye_spacing());
 
diff --git a/src/trance/director.cpp b/src/trance/director.cpp
index 8f61c74..e304744 100644
--- a/src/trance/director.cpp
+++ b/src/trance/director.cpp
@@ -170,7 +170,7 @@ void Director::render_image(const Image& image, float alpha, float zoom_origin,
          x_flip ? 0.f : 1.f, y_flip ? 1.f : 0.f, x_flip ? 1.f : 0.f, y_flip ? 1.f : 0.f});
   };
 
-  for (int x = 0; x_size * (2 * x - 1) < 1 + _system.eye_spacing().eye_spacing(); ++x) {
+  for (int x = 0; x_size * (2 * x - 1) < 1 + std::abs(_system.eye_spacing().eye_spacing()); ++x) {
     for (int y = 0; y_size * (2 * y - 1) < 1; ++y) {
       add_quad(x, y, x % 2, y % 2);
       if (x) {