Cranial Nerve Eye Movement Analysis
This analysis evaluates eye movements that are controlled by cranial nerves involved in gaze. These include the oculomotor nerve, trochlear nerve, and abducens nerve, which help the eyes move left, right, up, and down in a coordinated way.
What we measure: The system reviews video-based eye movement tasks and estimates whether each eye moves normally, shows reduced movement, or moves differently compared with the other eye.
What the Results May Show
Results may describe normal movement, mild reduction, marked reduction, or asymmetry between the eyes. Horizontal movement refers to looking left and right. Vertical movement refers to looking up and down.
Mild asymmetry can occur for many reasons, including fatigue, camera position, lighting, head movement, or incomplete task performance. Repeated findings across multiple studies are more meaningful than a single result.
Example Analysis Video
Example cranial nerve eye movement analysis for a selected user study.
Important
This analysis is intended as a screening and monitoring aid. It does not diagnose a medical condition by itself. Results should be interpreted together with clinical history, examination, and repeated testing when appropriate.
Technology Used
This analysis uses computer vision and facial landmark tracking to identify key regions of the face, eyes, eyelids, and iris position from video. The system generates a face mesh, tracks eye regions frame by frame, and measures how the eyes move during specific tasks such as looking left, right, up, down, straight ahead, smiling, and raising the eyebrows.
Region analysis estimates the center and boundaries of each eye, then normalizes iris or eye-center movement within those regions. This allows the software to compare horizontal and vertical movement, detect reduced range of motion, evaluate asymmetry between the two eyes, and summarize findings across multiple studies.
The analysis also checks whether iris data is available and whether the eye regions are reliable enough to interpret. If tracking quality is limited, results should be interpreted cautiously and repeated testing may be useful.