Create a simple Unity 3D application for VR headset - sitting in an office room with a vision chart on the far wall, basic functionality.

I need a very simple demo VR application built using Unity 3D. This is a demo to be used on an Oculus Rift The environment should be simple office room with some desks/chairs against one wall, usual stuff. The room should be 7m long by 3m wide. The user should be sat on a chair against one wall, facing towards the far wall which should be 6m away from the chair. On the far wall should be a vision testing chart (e.g. a "Snellen" chart - do a google search). The view towards this should be unobstructed (i.e. the middle part of the room should be clear of any clutter, and there shouldn't be anything against the far wall to interfere with the view of the vision testing chart). The person's position should be fixed (i.e. they can't move out of the chair). However, they should be able to move their head to look around the room. The only functionality should be that the user should be able to press the mouse buttons. When the left mouse button is pressed, the left eye (i.e. the camera relating to the left eye in Unity 3D) should go very blurry or totally dark (so that only the right eye is seeing clearly). If the right mouse button is clicked, the right eye should become blurry and the left eye clear. If the centre mouse button is clicked, both eyes should become clear. I'd like to receive this ready to use, and also the files necessary so that I can make any changes to the design in Unity 3D. I've attached a file which illustrates the geometric alignment - feel free to design the room however you like as long as it looks reasonably professional and realistic.