We normally operated our F27s in the 1970's with no cockpit door; just a curtain for night time use which was rarely used.
The view through the windshield from the aisle seats at the back of the cabin during an approach was of the runway, or rather whatever the aircraft was pointing at.
Any tiny yaw or pitch change was very, very exaggerated by the long distance from the windshield to the eye, and the very small angle of vision. Passengers would weep in terror as the pilots seemed to lose control and the aircraft appeared to swing wildly about the sky.
I'm sure someone can explain the geometry of this illusion in scientific terms that are beyond me.