A computer system configured for identifying one or more symptoms that may indicate a pathology selected from the group consisting of increased intracranial pressure, hydrocephalus, concussion dementia, schizophrenia, amyotrophic lateral sclerosis, muscular sclerosis, autism and fragile disease in a subject, the computer system comprising: a) a monitor and a camera, the monitor and the camera mounted by a linked orientation; wherein the monitor is configured to display a visual stimulus travelling a trajectory across the screen of the monitor ; b) an eyetracker for tracking eye movement of the subject in response to a visual stimulus displayed on the monitor ; wherein the eyetracker is configured for analyzing eye movement of the subject by converting the tracked changes of pupil angle into two orthogonal (x, y) components indicating horizontal and vertical change due to the linked orientation of the monitor and the camera; c) one or more processors (106; 1010) and a main memory , wherein the one or more processors (106; 1010) is/are in response to an arrangement of instructions contained in the main memory configured for comparing eye movement of the subject to eye movement of a control population by generating and plotting pairs of (x,y) values representing two components of instantaneous angle of pupil reflection (horizontal, vertical) over a period of time; characterized in that the one or more processors (106; 1010) are configured for identifying the subject as having eye movement significantly different from the control population, wherein the one or more processors (106; 1010) of the computer system is/are configured for measuring the integrity of each subject's values by generating figures resembling boxes that reflect the trajectory travelled by visual stimulation, the sides or arms of the figures being z-scored using the mean and standard deviation from the control population, and wherein the one or more processors of the computer system configured for identifying the subject as having eye movement significantly different from the control population is/are configured for calculating z-scores above a significant threshold in either or both 1, 2, 3, 4 sides or arms of the figures. a) a monitor and a camera, the monitor and the camera mounted by a linked orientation; wherein the monitor is configured to display a visual stimulus travelling a trajectory across the screen of the monitor ; b) an eyetracker for tracking eye movement of the subject in response to a visual stimulus displayed on the monitor ; wherein the eyetracker is configured for analyzing eye movement of the subject by converting the tracked changes of pupil angle into two orthogonal (x, y) components indicating horizontal and vertical change due to the linked orientation of the monitor and the camera; c) one or more processors (106; 1010) and a main memory , wherein the one or more processors (106; 1010) is/are in response to an arrangement of instructions contained in the main memory configured for comparing eye movement of the subject to eye movement of a control population by generating and plotting pairs of (x,y) values representing two components of instantaneous angle of pupil reflection (horizontal, vertical) over a period of time; <EOS>