问Three.js StereoEffect为何点击获取的坐标发生了偏移呢 应该如何获取正确的坐标呢？

effect = new StereoEffect(renderer);
effect.setSize(window.innerWidth, window.innerHeight);

mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
if (event.clientX <= (window.innerWidth / 2)) {
    var stereoCamera = effect.getStereoCamera().cameraL;
} else {
    var stereoCamera = effect.getStereoCamera().cameraL;
}
raycaster.setFromCamera(mouse, stereoCamera);
var TextIntroduce = raycaster.intersectObjects(scene.children, true);