diff --git a/threejs/tests/examples/effects/vreffect.ts b/threejs/tests/examples/effects/vreffect.ts
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/threejs/three-tests.ts b/threejs/three-tests.ts
index 0693d40bd1..64213831a6 100644
--- a/threejs/three-tests.ts
+++ b/threejs/three-tests.ts
@@ -59,3 +59,4 @@ THE SOFTWARE.
 
 // examples test.
 /// <reference path="./tests/examples/detector.ts" />
+/// <reference path="./tests/examples/effects/vreffect.ts" />
diff --git a/threejs/three-vreffect.d.ts b/threejs/three-vreffect.d.ts
new file mode 100644
index 0000000000..2fab612808
--- /dev/null
+++ b/threejs/three-vreffect.d.ts
@@ -0,0 +1,31 @@
+// Type definitions for three.js (VREffect.js)
+// Project: https://github.com/mrdoob/three.js/blob/master/examples/js/effects/VREffect.js
+// Definitions by: Toshiya Nakakura <https://github.com/nakakura>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="./three.d.ts" />
+
+declare module THREE {
+    export class VREffect {
+        constructor(renderer: Renderer, callback?: (params: string)=>void);
+        render(scene: Scene, camera: Camera): void;
+        setSize(width: number, height: number): void;
+        setFullScreen(flag: boolean): void;
+        startFullscreen(): void;
+        FovToNDCScaleOffset(fov: VRFov): VREffectOffset;
+        FovPortToProjection(fov: VRFov, rightHanded: boolean, zNear: number, zFar: number): Matrix4;
+        FovToProjection(fov: VRFov, rightHanded: boolean, zNear: number, zFar: number): Matrix4;
+    }
+
+    export interface VRFov{
+        leftTan: number;
+        rightTan: number;
+        upTan: number;
+        downTan: number;
+    }
+
+    export interface VREffectOffset{
+        scale: number;
+        offset: number;
+    }
+}