Raycast from OVRCameraRig forward INACCURATE

I need make raycast from camera forward, I have tested CenterEyeAnchor,
LeftEyeAnchor and RightEyeAnchor as origin and for the direction I add
an empty object(miraT) in front of the camera and doesnt work
accurately.

When I do it with a normal camera in Unity I can make it work perfectly
but with OVRCameraRig I don't know how to do it. Sometimes it works
centered, sometimes it doesn't. I can't think of anything else, any idea
is welcome.

my raycast code:

if (Physics.Raycast(camara.position, miraT.position, out RaycastHit
hit, Mathf.Infinity))

I'm developing for Oculus Quest Thank you!