83 results about "Right visual field" patented technology

Visual aids and associated methods for improving the eye sight of low vision patients are provided. Generally, the devices of the present disclosure address the needs of age-related macular degeneration (AMD) and other low vision patients by providing a magnified retinal image while keeping a large visual field of view. Further, the devices of the present disclosure allow direction of the magnified retinal image away from damaged portions of the retina and towards healthy, or at least healthier, portions of the retina. The devices of the present disclosure are also configured for implantation within the eye using minimally invasive surgical procedures. Methods of utilizing the devices of the present disclosure, including surgical procedures, are also provided.

In a method for testing the visual field of a patient especially the central visual field, stereoscopic or binocularly displaced fixation images are presented under computer control to the respective eyes of the patient. In addition, a series of test images viewable by only one of the patient's eyes is generated under the control of the computer. The fixation images, one for each eye, are presented on two separate electronic displays, while the test images may be produced on a third display member different from the electronic displays. The computer is programmed to precisely determine a boundary between points corresponding to unseen test images and points corresponding to seen test images, by automatically testing additional points in a region located about the curve and between points corresponding to unseen test images and points corresponding to seen test images.

A device and method are provided for treating the visual system of a human including the retina, visual cortex and / or other neuro-cellular structures. The method includes the steps of locating and defining a blind zone of deteriorated vision within the human's visual system, defining a treatment area which is located predominantly within the blind zone, and treating the human's visual system by presenting visual stimuli to the human's visual system. The majority of the visual stimuli are presented to at least a portion of the blind zone.

A game apparatus includes a CPU, and displays on a monitor a scene viewed from a virtual camera moving in a virtual game space. In the game apparatus, an aspect ratio of an image to be displayed on the monitor is acquired, and a moving speed of the virtual camera is set based on the aspect ratio. For example, a visual field of the virtual camera is set based on the aspect ratio, and as the image is laterally longer with respect to a longitudinal thereof, the visual field in a crosswise direction is made wider, and therefore a crosswise moving speed of the virtual camera is made smaller.

Computer-implemented method for enhancing a participant's cognition, including, e.g., visual memory, utilizing a computing device to present visual stimuli for training, and to record responses from the participant. Multiple graphical elements are provided for visual presentation to the participant. A temporal sequence of a plurality of the graphical elements is visually presented, including displaying each graphical element in the sequence at a respective location in a visual field for a specified duration, then ceasing to display the graphical element. The presented graphical elements include at least two matching graphical elements. The participant is required to respond to the presented sequence, including indicating locations of matching graphical elements. A determination is made as to whether the participant responded correctly, and the duration modified based on the determining. The visually presenting, requiring, determining, and modifying are repeated one or more times in an iterative manner to improve the participant's cognition.

A spectacle system is disclosed for shifting the field expansion property of peripheral prisms from the upper and lower peripheral visual fields toward the central visual field of a person with peripheral field loss, and particularly hemianopia, while maintaining the lateral field expansion. In terms of perceived image, the spectacle system includes image-shifting devices that shift the perceived images from the central missing visual fields toward the upper and lower peripheral visual fields. The image-shifting devices are placed out of the central visual field and do not interfere with the normal central or foveal vision of the wearer. The spectacle system can be fitted onto one or both carrier lenses of a pair of spectacles and includes at least one image-shifting device. The image-shifting device includes a plurality of image-shifting elements. In one embodiment, the image-shifting device includes a plurality of image-shifting mirror elements that are arranged to form a Fresnel-like mirrors based prism. In another embodiment, the image-shifting elements can include either a plurality of image shifting mirrors or a plurality of image-shifting prisms that are oriented such that the optical axis of each image-shifting element forms an acute angle with the horizontal visual meridian of the person wearing the spectacles.

A visual field calculation apparatus capable of accurately calculating a visual field range of a user without using a complex configuration is provided. The visual field calculation apparatus includes a saccade detector that detects a saccade on the basis of a first gaze direction detected at a first timing and a second gaze direction detected at a second timing, a saccade speed calculator that calculates speed of the saccade on the basis of a time difference between the first timing and the second timing, the first gaze direction, and the second gaze direction, and a visual field range calculator that calculates a displacement vector of a saccade whose speed exceeds a first threshold, and calculates an area including a final point of the displacement vector as the visual field range of the user.

An automated unaided virtual perimetry system and underlying method for relative-threshold contrast sensitivity interrogation of the visual field via algorithmic presentation of visual stimuli on a screen and subsequent analysis of test response data for the detection of pathophysiologic scotomas as well response time registration and analysis for visual motor reflex testing. Launch of system via access from a remote server or direct installation of systems technology allows seamless capability at the local computer system to instruct, administer, and analyze output of stimuli and input of responses of test subjects or subjects independent of external input or control. Specific algorithmic test environment is designed to achieve comparable clinical efficacy and diagnostic utility to office-based perimetry system.

An endoscope includes a treatment tool, a right eye image capturing unit, and a left eye image capturing unit. The right eye image capturing unit and the left eye image capturing unit capture images which are to be displayed as a stereoscopic image of an image capturing target. The maximum convergence angle of arbitrary point in movable range of the treatment tool which exists in both visual fields of the right eye image capturing unit and the left eye image capturing unit is 30 degrees or less.

The invention discloses a head mounted type display device based on holographic waveguide. The head mounted type display device comprises inlet coupling grating (1), left visual field deflection grating (2), right visual field deflection grating (3), outlet coupling grating (4), and rectangular waveguide (5). The inlet coupling grating (1), the left visual field deflection grating (2), the right visual field deflection grating (3), and the outlet coupling grating (4) are attached to the upper surface or the lower surface of the rectangular waveguide (5). Whether the inlet coupling grating (1), the left visual field deflection grating (2), the right visual field deflection grating (3), the outlet coupling grating (4), and the rectangular waveguide (5) are attached to the upper surface or the lower surface is determined by an exit entrance pupil light design direction. By adopting a pupil remodeling way, a visual field separation problem of a conventional two-dimensional pupil dilation way under a large visual field angle condition is solved.

The invention discloses a high-visual angle resolution 360-degree visual field three-dimensional displaying device. The device comprises an LED (light-emitting diode) light source, an illumination optical system, a space optical modulator, a projection optical system, a combined directional scattering screen, a rotating device, an image storage control module, a rotation detecting module and a light source pulse driving control module. The invention also discloses a method for realizing high-visual angle resolution 360-degree visual field three-dimensional displaying. The LED light source is matched with the rotation of the combined directional scattering screen in a pulse illuminating way through the light source pulse driving control module, high-density visual angle scanning is realized by using minimal deviation of the scattering direction of each directional scattering sub-screen, 360-degree visual field three-dimensional displaying with high visual angle resolution is realized, the quality of a three-dimensional display image is improved, and the habit of nature observation of human eyes is better satisfied.

The invention discloses a mutative scale-based high-precision optical three-dimensional measurement method. According to the method of the invention, a binocular vision measurement system is firstly built; through switching focal lengths under different visual field scales, two times or more times of scanning under different scales can be carried out in an area with enough overlapped feature points; point cloud data under a large visual field serve as the basis, after local point cloud data are acquired through scanning in a small visual field, splicing of data of two point clouds is carried out, and thus, three-dimensional point cloud rebuilding on the overall object including local detailed parts can be completed. Compared with the scanning method under other single scale, the method of the invention has the advantages that the scanning precision is higher; after the visual field scale is changed, a system calibration process is simple, no special calibration object is needed, the calibration result precision is high, and the matching and splicing result is stable and reliable in a condition with enough sharing feature points, and the method can be widely applied to a visual measurement occasion with high precision requirements.

A 3-dimensional displaying apparatus includes an image displaying panel having a plurality of pixels and a backlight panel spaced apart from one surface of the image displaying panel. The backlight panel includes a first line source set having a plurality of line sources arranged at regular intervals and a second line source set having line sources arranged spaced apart from the respective line sources of the first line source set by a predetermined interval. The first line source set and the second line source set are driven alternately. Thus, in a case where a horizontal location of an observer varies, the change of brightness of image information and the crosstalk between adjacent visual fields are minimized, and pseudo-stereoscopic vision is prevented. Also, the irregularity of brightness distribution in a visual field may be solved

The present invention discloses a target relay tracking algorithm based on intelligent street lamp partners. According to the present invention, a target is detected by utilizing a deep network model, and secondly, the features of the target are extracted by utilizing another one deep model. An intelligent street lamp partner can snapshot the images of a plurality of visual angles of an object, and save the features extracted at each visual angle. A system detects the target at set intervals, and fuses a detection result and a tracking result. When the object moves out from the visual field of the current intelligent street lamp partner and enters in the visual field of the next intelligent street lamp partner, the next intelligent street lamp partner similarly detects the target and extracts the features, and the extracted features are compared with the features saved by the last intelligent street lamp partner, so that whether the detected objects are the same object can be determined, and the target relay tracking is realized.

A kind of wide visual field mediate to near distances progressive multi-focal lens, it belongs to spectacle or same spectacle's characteristic protective lens, which consists of near and intermediate visual areas, the described lens has progressive surfaces which designed gradually step by step with different diopters in the mediate intermediate and near visual areas.The narrowest visual corridor (path) has width 18-20 mm, the described lens from central line down to near visual area has length 10 mm. This lens has wider visual corridor in the intermediate area, also has six focci are reasonable located in the corridor, will affect to improve vision of wearer for the visual fields, increase up the degree of width and clarity, of vision also strengthen the comfortable feelings when wore the spectacle; in addition, it will affect to delete the damage of vision by current market lens which made and caused by incorrect eye's examination. This lens is used for corrective presbyopia vision, specially corrective for mediate and near distance presbyopia vision.

A rim portion or the like functioning as a boundary portion is arranged in a position corresponding to an interpupillary distance of an observer. Therefore, it is possible to cause a non-observer looking at the observer wearing a virtual image display apparatus from the outside to recognize that an outer frame portion is present in an appropriate position in terms of an eyeglass shape. It is possible to reduce a sense of discomfort given to the non-observer. Since the boundary portion is present in an appropriate position in terms of an eyeglass shape, a visual field same as a visual field obtained when the eyeglasses are worn is secured. Therefore, it is possible to sufficiently secure a visual field range for the observer in see-through.

A visual field testing apparatus for scanning the visual field of a human eye in great detail, precision, and clarity so as to detect the smallest blind area whereby allowing users the ability of early detection of glaucoma and other eye diseases of visual loss. The apparatus is small and inexpensive so that anyone can afford to purchase it and self-test without assistance so that the user can test frequently at home which further leads to early detection of eye diseases. Because of its great precision and detail in test results, the present invention is especially useful to doctors and researchers. One embodiment of the present invention is a visual field tester which comprises: (a) a recording surface having eye fixation means to fixate an eye's visual field relative to said recording surface; and (b) a handheld scanning device which has a test mark for detecting very small blind areas in said eye's visual field and marking means for mapping said detected very small blind areas onto said recording surface.

The invention discloses a multiresolution large visual field angle high precision photogrammetry apparatus, which comprises: a dimensional visual sense system that at least comprises two large visual field cameras, wherein, an intersection of visual fields covers a detected area, and the two large visual field cameras are used for measuring low precision three dimensional positions of targets of the detected object in the detected area; multiple small visual field cameras, wherein, union of the visual fields covers the detected area, small visual field cameras are used for imaging the detected object; a data processing part, which connects to a three-dimensional visual sense system and multiple small visual field cameras, is used for determining which visual field of the small visual field cameras the detected object is located in, according to the low precision three dimensional positions of the detected object measured by the dimensional visual sense system, further determining a high precision three dimensional position of the detected object according to image positions of the detected object in these small visual field cameras.

The invention relates to test-retest variability in tests of visual fields, and methods and systems useful in reducing this variability. The various methods and systems of the invention use gaze-direction data to improve the estimate of scotoma edges and to otherwise adjust for test-retest variability in perimetry. This may be useful in assessing progression of a patient's condition, such as glaucoma

The invention discloses a method for automatically adjusting a visual field of a rearview mirror. The method comprises the steps that a biological parameter of a driver is acquired in real time after a door opening signal is detected; whether the information of the driver is stored or not is determined, if the information of the driver is stored, the corresponding adjustment parameter is obtained, and the rearview mirror is adjusted according to the adjustment parameter; if the information of the driver is not stored, a general model is invoked according to the biological parameter to obtain the pre-adjustment parameter of the driver, and the rearview mirror is adjusted according to the pre-adjustment parameter; the sitting posture data after the driver sits in the driving position is obtained, the precise adjustment parameter is generated according to the sitting posture data according to a first predetermined rule, and the rearview mirror is adjusted according to the precise adjustment parameter; and during the vehicle travelling process, the rearview mirror is dynamically adjusted according to at least one of second preset rules according to at least one trigger condition. According to the method for automatically adjusting the visual field, the rearview mirror can be quickly and intelligently adjusted, and the driving safety is improved.

The invention discloses a large visual field non-diffracting Bessel light sheet microscopic scanning imaging method and system. The method comprises following steps: generating two collimated Gauss laser beams with same intensity by a laser source; converting two Gauss laser beams into two Bessel beams by a Bessel light generating element respectively; aligning two Bessel beams, projecting the Bessel beams on two sides of a scanned sample to excite the sample to generate fluorescence; collecting the fluorescence by a detector with an electron slit, using the fluorescence to carry out exposureimaging to obtain the image of the sample, and adopting a detection object lens with a low value aperture to carry out large visual field imaging by the detector. Two Bessel beams are used to enhancethe transmission depth in a same visual field, the position of the electron slit is opposite to the center of two Bessel beams, under a condition of large depth of field, the side lobe effect is eliminated, and the depth of the electron slit is matched with the diameter of the center of two Bessel beams. The provided method and system can realize large visual filed and large depth of field imagingand improves the imaging quality of sample images.

The invention relates to mobile computer devices, front-mounted optical systems and computer program products allowing perimetry measurement.

The invention discloses a method and a device for adjusting and controlling the visual field of a PT camera. The method can provide the direct perception of the camera pointing direction to an operator, the direct direction perception is also provided through the panoramic picture, and the PT camera can be quickly positioned in any orientation. The method and the device realize a high efficient man-machine interaction mode, the operator faces to the global view image and directly operates during the positioning process, the visual field can be adjusted, and the operator can conveniently realize the WYSIWYG operating and controlling effect and can well realize the accurate and quick PT positioning in PT camera visual field under the circumstance that the operator is unfamiliar with the mounting position and the control method of the camera.

The invention relates to a method for designing a plane control cabinet windshield specific to a visual field in order to solve the problems in the prior art. In the invention, the two-dimensional design is required to be three-dimensional and visualized. In addition, the invention also provides a novel technology for generating a coverage chart, wherein an accurate control cabin coverage chart is generated by using an accurate topological deformation technology.

The invention relates to a radiance calibration method of a large visual field optical remote sensing instrument. The radiance calibration method includes the following steps: the radial direction of a calibration system is changed by means of an external reflection unit, the radiation which has high-quality Burt characteristic in the calibration system radiation source is reflected to the visual field of the large visual field optical remote sensing instrument, and the full visual field radiance is calibrated. By means of the radiance calibration method of the large visual field optical remote sensing instrument, according to the multidirectional structural features of the large visual field, an external reflecting system of a circle structure composed of special plane mirrors is designed, a fixed angle is formed, the radiation with the high-quality Burt characteristic within an angle in a range of from a integrating sphere plus 30 degrees and the integrating sphere minus 30 degrees is reflexed to the direction meeting system calibration, therefore, the integrating sphere in not enlarged, the radiation with the high-quality Burt characteristic within the angle in the range of from the integrating sphere plus 30 degrees and the integrating sphere minus 30 degrees is fully used, and the radiance calibration of the large visual field optical remote sensing instrument is achieved.

A virtual reality system can perform a visual field test for detecting an ocular disorder. The system can include a display unit and a virtual reality headset. The virtual reality headset can be in wireless communication with the display unit. The virtual reality headset can include a display screen configured to present a test scene to a patient to thereby detect the ocular disorder.