язык по средней линии(at neurological exam: пациента просят высунуть язык (to protrude the tongue) и смотрят на возможные отклонения, если их нет – пишут "midline tongue protrusion" CopperKettle)
смещение зрительных осей(патологический процесс: Visual Midline Shift Syndrome results from dysfunction of the ambient visual process. It is caused by distortions of the spatial system causing the individual to misperceive their position in their spatial environment. This causes a shift in their concept of their perceived visual midline. This will frequently cause the person to lean to one side, forward and/or backward. (nora.cc/for-patients-mainmenu-34/visual-midline-shift-syndrome-mainmenu-79.html); я подобрал русский аналог, но не уверен полностью: humbio.ruvdengin)