Superior field about 60 degrees (limited by the eyebrows).-Approximately 75° inferior field (limited by the bump on the cheek).-About 60 degrees to the nasal field (by a nose).-Approximately 95 degrees temporal field
superior field of about 60 degrees (on the brow) - inferior field about 75 degrees (on the cheek) - about 60 degrees nasal field (on the nose) - temporal field of about 95 degrees.
Superior field about 60 degrees (limited by the eyebrows) - inferior field about 75 degrees (limited by the cheekbone) - nasal field about 60 degrees. (limited by the nose) - temporal field about 95 degrees.