6 results about "Eye measurements" patented technology

A system for a full-field OCT eye measurement, comprising:—a source (1) of a light beam (2),—a detector (3), preferably in form of a camera,—an interferometer, comprising a reference arm (4) and a sample arm (5),—a beam splitter (6), configured to receive the light beam (2) and to split the light beam (2) into a sample beam (7) and a reference beam (8) and further configured to direct the sample beam (2) to the sample arm (5) and the reference beam (8) to the reference arm (4) respectively, wherein the sample arm (5) is configured for guiding the sample beam (7) through a point on the cornea of a subject's eye (9) into the subject's eye (9) and back to the detector through the beam splitter (6), wherein the reference arm (4) is configured for guiding the reference beam (8) to a mirror (10) and back to the detector (3) through the beam splitter (6), wherein said detector (3) is configured and programmed for comparing the sample beam (7) and the reference beam (8) for detecting diseases of the subject's eye (9). The system is characterized in that it comprises an arrangement for decreasing the intensity of the sample beam (7) passing through the point of the cornea of the subject's eye (9).

A method for operating a driver assistance system includes triggering an assistance measure according to a current degree of attentiveness of a vehicle occupant while a motor vehicle is traveling. The current degree of attentiveness is identified in that, during travel and within an observation interval, a current eye opening width of at least one eye of the vehicle occupant is recorded several times as the distance between an upper and a lower eye measurement point, and a frequency distribution of the various eye opening widths is calculated for the at least one observation interval. Comparative frequency distributions are provided, with a known degree of attentiveness being assigned to each comparative frequency distribution. On the basis of a comparison, it is determined which of the comparative frequency distributions is closest to the frequency distribution observed.

An eye-tracking system includes a controller configured to target one or both of a user's left and right eyes: receiving eye measurement data associated with the eye; determining the optical axis of the eye based on the eye measurement data; selecting one of a plurality of eye models based on the direction of the optical axis; and determining the gaze vector of the eye by applying the selected eye model to the eye measurement data.

The invention relates to a method for collecting biometric measurement data of an eye based on different measurement modes, which method enables physiologically correct, representative and robust biometric measurement data. In the method according to the invention, the measurement data of the individual measurement variables are recorded continuously during the measurement time with as high a repetition rate as possible, and the dynamic behavior of the eye is also recorded with as high a repetition rate as possible. The individual phases of the eye dynamics are analyzed from the measurement values, the limits for the stable vision phase are defined, and only the measurement data of the individual measurement variables detected during the stable vision phase are output. Although the proposed method is particularly used for collecting biometric measurement data of an eye in the preparation of cataract surgery, the method can also be used in other fields of ophthalmology to produce error-free eye measurement data or recordings.

The application relates to an intraocular pressure measuring device and system, comprising a wearing assembly; a mounting shell movably arranged on the wearing assembly; a pressure measuring assembly detachably mounted in the mounting shell, the pressure measuring assembly comprising a pressure sensing piece, a displacement sensing piece, a contact piece, a barrel and a driving piece, the driving piece, the pressure sensing piece and the displacement sensing piece being mounted in the barrel, and the pressure sensing piece being connected with the contact piece; the contact piece is used for contacting and applying pressure to the eye of a subject, the pressure sensing piece is used for monitoring pressure information of the surface of the eye, and the displacement sensing piece is used for measuring the moving distance of the pressure sensing piece. The contact piece in the pressure measuring assembly acts on the eye of the subject, closed-eye measurement is realized, the discomfort of the subject in the measurement process is reduced, and corneal damage and stress reaction are avoided, and the application is especially suitable for children or corneal patients.