A dark adapted perimetry device comprising a photobleaching device, a concave, array guide, the guide comprising a stimulus target array comprising a plurality of stimulus target light sources positioned within the guide and a control unit to selectively illuminate light sources comprised in the plurality of stimulus target light sources at a predetermined luminance is disclosed. The stimulus target light sources may be illuminated by a LED complex source comprising two or more LEDs. Also disclosed is a method using the perimetry device. A bleaching device comprising an eye piece for positioning the eye, a locator for moving the bleaching device into and out of the optical path, an imaging system for tracking the gaze direction or a fixation target, an illumination source and a bleach control device to control the brightness and pulse form of the illumination source is also disclosed along with a method of photobleaching.

When displaying visual targets on a planar display element and performing vision examinations, the size of the visual target visible to the subject changes according to the position at which the visual target is displayed. This vision examination device includes: a planar display element that displays visual targets to a subject of a vision examination; and a display optical system provided upon an optical axis between an eyeball position at which an eyeball of the subject is arranged and a display screen of the planar display element. The display optical system includes an f-θ optical system having a proportional relationship between an image height on the display screen of the planar display element and the angle of incidence θ for the main light rays when the subject views the visual target through the display optical system from the eyeball position.

Systems and methods are provided for post-hoc correction of calibration errors in eye tracking data, which take into consideration calibration errors that result from changes in user position during a user session in which the user's fixations on a display screen are captured and recorded by an eye tracking system, and which take into consideration errors that occur when the user looks away from a displayed target item before selecting the target item.

A computer, a high resolution monitor and a patient interface is utilized to implement a visual contrast sensitivity function measurement test. More specifically, a computerized video system is configured to implement a tilted-grating forced choice contrast sensitivity function test. The invention utilizes known measurement methods for the visual contrast sensitivity function and automates their use by computerizing the system and couples it with a patient-interactive user interface in order to produce an accurate quantitative result.

The present disclosure provides methods, devices, and systems for automated measured correction of the eyes and provision of sunglasses and eyeglasses for individuals, including individuals with a visual acuity of 20/20 or better. Methods, devices and systems for remote measurement of refraction by an examiner away from the measurement system are also disclosed.

Systems and methods for performing a visual field test of a patient are described. One example method for performing the visual field test of the patient using a visual field testing device having a refractive correction element, a patient support, and a motor operably attached to one of the refractive correction element or the patient support includes positioning the patient's head relative to the device using the patient support. An image showing the position of the eye relative to the refractive correction element is collected. The relative displacement of the eye with respect to the refractive correction element is determined based on the collected image. The motor is actuated in a manner to reduce the determined displacement. A series of test stimuli is displayed to the patient's eye and responses to the test stimuli are received from the patient. The responses are analyzed to make an assessment of the patient's visual field.

The present disclosure provides a method of determining a distance and a height, including: measuring, a first distance, a second distance and a third distance from the security inspection device to the tested person as well as measuring a first height, a second height and a third height of the tested person; determining, a relationship between the first distance and a minimum distance threshold as well as a maximum distance threshold, a relationship between the second distance and the minimum distance threshold as well as the maximum distance threshold, and a relationship between the third distance and the minimum distance threshold as well as the maximum distance threshold; determining, a final distance from the security inspection device to the tested person and a final height of the tested person; and performing a pixel conversion and a size conversion on the pupil image of the tested person

Systems and methods for imaging an eye are disclosed. The systems and methods may include at least one plenoptic camera. The systems and methods may include an illumination source with a plurality of lights.

There is a need for robust and portable system, and apparatus for ophthalmology. We propose use of folding apparatus for ocular purposes for the first time. Our system will have a chin-rest (or face-rest or forehead rest) that can be folded so that the ocular device could be transported in a brief-case type casing.

Systems and methods for monitoring eye health. The systems and methods monitor eye health by measuring scleral strain by way of an implantable monitor, a wearable monitor configured in eyeglasses, or an external monitor using a portable tablet computing device. Certain embodiments of the strain monitor may be utilized to measure the strain on any surface to which it is attached, including, but not limited to, the skin of a patient or the surface of a structure such as a building or a bridge.