Abstract:
A Pupillometer is disclosed. The Pupillometer has a display, an imaging apparatus that has a pupil finder and a microprocessor, and a memory in communication with the microprocessor. The display is sized to simultaneously display a video of y or more seconds in length of a left pupil and a video of y or more seconds in length of a right pupil. The pupil finder identifies the perimeter of a pupil. The imaging apparatus is capable of recording images of an individual's pupils at a rate of x image frames per second for a period of y or more seconds and playing back said image frames as a video at x image frames per second or at another rate that is faster or slower than x image frames per second. The memory has stored therein a program for enabling said microprocessor to do the following: (i) identify a center of the left pupil and a center of the right pupil for each image frame; (ii) synchronize each image frame of the two videos starting from the first frame; (iii) cause the display to display the two videos simultaneously such that each of the image frames of the video of the left eye is synchronized to a corresponding image frame of the video of the right eye when played back on the display; and (iv) cause the two videos to be displayed so that the center of the left pupil in each image frame is aligned on the display with the center of the right pupil for the corresponding image frame.
Abstract:
Methods, systems and devices for determining whether a patient has an abnormally high level of intracranial pressure is described. The method includes using a pupillometer to obtain pupillary response data from the patient. The pupillary response data can be representative of one or more pupillary response characteristics of the patient. The method further includes providing a data analysis system comprising a microprocessor that is in communication with the pupillometer. The microprocessor includes an algorithm that converts the pupillary response data to a scalar value that is indicative of the patient's level of intracranial pressure. The microprocessor can be a stand-alone computer connected to the pupillometer or it can be integral with the pupillometer. The method further includes using the data analysis system to derive a scalar value based on the pupillary response data from the patient, wherein the scalar value is indicative of the patient's level of intracranial pressure. The scalar value can be represented by a numerical value, graphical depiction, color, sound, or other visual or audio means that indicates a value. The scalar value can be a Scalar value that indicates that the patient's pupillary response characteristics indicate that the patient's intracranial pressure is within a normal range, an abnormal range, or that the pupillary response characteristics indicate that the pupil is non-responsive.
Abstract:
A viewing aid includes a camera, a viewing surface within a field of view of the camera, a memory, a display, and software programmed to track a tracking element within the field of view. Viewing material is placed on the viewing surface. The camera, viewing surface, and material all remain substantially stationary. The camera captures and stores an initial image of the material in the memory. The software then tracks the location of a tracking element within the field of view then maps the location to a portion of the initial image in memory using an X-Y coordinate system, and/or identifies character elements of the material adjacent the tracking element then maps the character elements to corresponding character elements of the initial image in memory. An enhanced image is then displayed on the display corresponding to the mapped portion of the initial image.
Abstract:
A method of screening a pupil of a subject to determine whether the pupil reflex resembles a canonical pupil reflex is disclosed. The method comprises the steps of stimulating the pupil with a stimulus source, such as a pupilometer and determining whether one of various pupillary response conditions is met.
Abstract:
A system for use during a medical procedure. The system includes a pupilometer for obtaining data descriptive of one or more pupilary characteristics from an eye of a subject, and means for delivering a noxious stimulus. The means for delivering a noxious stimulus is in communication with the pupilometer and is activated by the pupilometer thereby sending a noxious stimulus to an anatomical structure of the patient.
Abstract:
A pupilometer having image capturing means, illumination means generating and emitting light of a first wavelength, stimulation means generating and emitting light of a second wavelength, and image processing software. The image processing software receives data from the image capturing means, identifies a pupil's dynamic response to light generated by the stimulation means, analyzes one or more components of the pupil's dynamic response, and produces an output comprising a value indicative of a neurological condition of a patient.
Abstract:
An ophthalmic examination system comprising a headrest with a detection element, and an ophthalmic instrument (OI) having a microprocessor and a sensor in communication with the microprocessor. The sensor is configured to detect the presence of the detection element, and the headrest is configured for coupling to the OI.
Abstract:
A method of screening a pupil of a subject to determine whether the pupil reflex resembles a canonical pupil reflex is disclosed. The method comprises the steps of stimulating the pupil with a stimulus source. The method further includes the steps of using a pupilometer to track the pupil's constriction response over a duration of time, wherein the step of tracking the pupil constriction response begins substantially simultaneously with or immediately subsequent to time 0 and lasts for a period of time y, and using the pupilometer to collect a plurality of data points in which each data point corresponds with a diameter of the pupil at a specific time within the time duration y. The method further includes the step of generating a pupil data profile by compiling the data points and determining whether one or more conditions arc met. wherein the one or more conditions comprises the following: (a) more than two data points exist representing the same pupil diameter at three or more separate times during duration y; (b) a first phase of the pupilary reflex response exists, wherein said first phase is characterized by a period of non-constriction immediately subsequent to time 0, said first phase having a duration of less than about 100 msec or greater than about 1000 msec; (c) if two data points exist representing the same pupil diameter at two separate times y1 and y2 during duration y, then the duration of time between y1 and y2 is less than about 100 msec: or during the first phase of the pupilary reflex, the diameter of the pupil increases before it decreases. Existence of one of said conditions indicates that the pupil reflex does not resemble a canonical reflex.
Abstract:
A pupilometer having a pupil irregularity or non-uniformity detection capability. The pupilometer may comprise an imaging sensor for generating signals representative of a pupil of an eye, a data processor; and a program executable by the data processor for enabling the data processor to process signals received from the imaging sensor and to thereby identify one or more regions of non-uniformity within an image of a perimeter of the pupil. The pupilometer may incorporate several innovative calibration and thresholding routines and may provide the basis for an innovative medical diagnostics system, when coupled to a network containing a suitable medical database and data processing hardware.
Abstract:
A vision enhancement system and improved X-Y viewing table. The vision enhancement system employs an X-Y viewing table that provides a mount for a video headset, the video headset, a monitor, and an image processing system. The video headset includes a camera and a video display system and is configured to detachably engage the mount provided on the X-Y viewing table. The image processing system has at least one port for communicating with the camera and video display system of the headset and another port for communicating with the monitor. An X-Y table in accordance with the present invention may comprise a base, a sliding tray coupled to the base for supporting an item, such as a book or newspaper, having one or more lines of text formed thereon, and a headset mounting unit coupled to the base. The mounting unit is configured such that a video headset may be detachably mounted thereon, and such that the video headset is maintained in a fixed position and at a selected distance over the tray.