diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index c3773c3b73..0c3bbd8d34 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -1118,7 +1118,16 @@ void Application::paintGL() {
 
         renderArgs._viewport = gpu::Vec4i(0, 0, size.width(), size.height());
         if (displayPlugin->isStereo()) {
-            //_myCamera.setProjection(displayPlugin->getProjection(Mono, _myCamera.getProjection()));
+            // Stereo modes will typically have a larger projection matrix overall,
+            // so we ask for the 'mono' projection matrix, which for stereo and HMD
+            // plugins will imply the combined projection for both eyes.  
+            //
+            // This is properly implemented for the Oculus plugins, but for OpenVR
+            // and Stereo displays I'm not sure how to get / calculate it, so we're 
+            // just relying on the left FOV in each case and hoping that the 
+            // overall culling margin of error doesn't cause popping in the 
+            // right eye.  There are FIXMEs in the relevant plugins
+            _myCamera.setProjection(displayPlugin->getProjection(Mono, _myCamera.getProjection()));
             renderArgs._context->enableStereo(true);
             mat4 eyeViews[2];
             mat4 eyeProjections[2];
diff --git a/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.cpp b/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.cpp
index 2c5af1a52b..e823f456ce 100644
--- a/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.cpp
+++ b/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.cpp
@@ -136,6 +136,13 @@ void OculusLegacyDisplayPlugin::activate() {
         _eyeOffsets[eye] = erd.HmdToEyeViewOffset;
         eyeSizes[eye] = toGlm(ovrHmd_GetFovTextureSize(_hmd, eye, erd.Fov, 1.0f));
     });
+    ovrFovPort combined = _eyeFovs[Left];
+    combined.LeftTan = std::max(_eyeFovs[Left].LeftTan, _eyeFovs[Right].LeftTan);
+    combined.RightTan = std::max(_eyeFovs[Left].RightTan, _eyeFovs[Right].RightTan);
+    ovrMatrix4f ovrPerspectiveProjection =
+        ovrMatrix4f_Projection(combined, DEFAULT_NEAR_CLIP, DEFAULT_FAR_CLIP, ovrProjection_RightHanded);
+    _eyeProjections[Mono] = toGlm(ovrPerspectiveProjection);
+
     _desiredFramebufferSize = uvec2(
         eyeSizes[0].x + eyeSizes[1].x,
         std::max(eyeSizes[0].y, eyeSizes[1].y));
diff --git a/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.h b/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.h
index ce91289cb0..219b6c54b3 100644
--- a/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.h
+++ b/libraries/display-plugins/src/display-plugins/oculus/OculusLegacyDisplayPlugin.h
@@ -52,7 +52,7 @@ private:
     ovrPosef _eyePoses[2];
     ovrVector3f _eyeOffsets[2];
     ovrFovPort _eyeFovs[2];
-    mat4 _eyeProjections[2];
+    mat4 _eyeProjections[3];
     mat4 _compositeEyeProjections[2];
     uvec2 _desiredFramebufferSize;
     ovrTexture _eyeTextures[2];
diff --git a/libraries/display-plugins/src/display-plugins/openvr/OpenVrDisplayPlugin.cpp b/libraries/display-plugins/src/display-plugins/openvr/OpenVrDisplayPlugin.cpp
index 1a5aa2f437..1e3e7699f4 100644
--- a/libraries/display-plugins/src/display-plugins/openvr/OpenVrDisplayPlugin.cpp
+++ b/libraries/display-plugins/src/display-plugins/openvr/OpenVrDisplayPlugin.cpp
@@ -149,6 +149,10 @@ uvec2 OpenVrDisplayPlugin::getRecommendedRenderSize() const {
 }
 
 mat4 OpenVrDisplayPlugin::getProjection(Eye eye, const mat4& baseProjection) const {
+    // FIXME hack to ensure that we don't crash trying to get the combined matrix
+    if (eye == Mono) {
+        eye = Left;
+    }
     return _eyesData[eye]._projectionMatrix;
 }
 
diff --git a/libraries/display-plugins/src/display-plugins/stereo/StereoDisplayPlugin.cpp b/libraries/display-plugins/src/display-plugins/stereo/StereoDisplayPlugin.cpp
index 104d74097c..20613d6a2c 100644
--- a/libraries/display-plugins/src/display-plugins/stereo/StereoDisplayPlugin.cpp
+++ b/libraries/display-plugins/src/display-plugins/stereo/StereoDisplayPlugin.cpp
@@ -29,6 +29,8 @@ const float DEFAULT_IPD = 0.064f;
 const float HALF_DEFAULT_IPD = DEFAULT_IPD / 2.0f;
 
 glm::mat4 StereoDisplayPlugin::getProjection(Eye eye, const glm::mat4& baseProjection) const {
+    // FIXME check for mono eye and provide a combined matrix, needed for proper
+    // culling
     // Refer to http://www.nvidia.com/content/gtc-2010/pdfs/2010_gtc2010.pdf on creating 
     // stereo projection matrices.  Do NOT use "toe-in", use translation.