Is there a convex lens on the wall opposite the door?

Not so good. Mirrors have the function of ward off evil spirits in geomantic omen, which is also commonly known as magic mirrors. If they are facing your home, they will bring negative energy and suffocation to your home, which will have an impact on your health and wealth. You can solve this problem by putting up "Pottery Eight Diagrams" on the door. This eight diagrams blessing is specially used for door-to-door and road-to-door in Feng Shui to relieve suffocation and other towns and houses.