An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.

A process, phoropter, and an optometry system, the process being for correction of the shift of the optical power of an active lens in a phoropter due to a temperature change over time, the active lens including a container filled with a liquid and having a deformable curvature membrane under the action of an actuator controlled by an optical power control command, the shift being that the active lens provides an actual optical power that is different from the expected optical power corresponding to the optical power control command. A temperature sensor is arranged in and/or on the phoropter to measure the temperature in the phoropter.

An ophthalmic imaging apparatus includes an OCT optical system that detects an interference signal between measurement light with which a subject eye is irradiated and reference light, and acquires OCT data of the subject eye by processing the interference signal, a scanner that scans with the measurement light on a scanning line on the subject eye, and a processor. The processor determines whether or not the OCT data acquired on the scanning line is proper, controls the scanner based on a determination result to change the scanning line for the measurement light to the next scanning line, and interpolates an alternative to OCT data determined not to be proper, based on OCT data corresponding to scanning lines around a scanning line on which the OCT data determined not to be proper is acquired.

Face image processing, eye fatigue detection, statistical data collection and methods for myopia prevention are disclosed, such as face image processing that selects and generates face images of same size, such as eye fatigue detection that calculates the rate of spontaneous eye blink and compares it to a threshold that is based on statistical data and analysis, such as statistical data collection that collects data including but not limited to participants' age, blink rate records, visual acuity test results, and information about general reading or watching environment. The eye fatigue detection applies filter to improve the accuracy of eye blink detection and generates interruption request to stop near work when the blink rates exceeds the threshold. The accuracy of the threshold is guaranteed by the correlation in the statistical data.

The invention relates to a method for examining an eye of a patient by the patient themselves by means of an ophthalmological apparatus, said apparatus having front optics and an apparatus pupil. According to said method, the patient positions the ophthalmological apparatus relative to the eye, a measure of the deviation of the pupil of the eye from the apparatus pupil is determined, and a pupil correction signal is produced depending on the measure of the deviation, said pupil correction signal specifying a direction and/or a degree of the deviation and being output to the patient. The patient can use the pupil correction signal for repositioning in relation to the ophthalmological apparatus with a smaller deviation.

An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.

Disclosed is an interactive gaze analysis kit for the early diagnosis of neurodegenerative pathologies essentially composed of a video camera with framing on the eyes of the patient and a screen both connected to a calculation unit through which the user is shown images specifically designed for being able to observe the presence of micronystagmus, the reaction times following an optical stimulations and measure the light sensitivity threshold, through which the diagnosis can be found. Since the test is particularly sensitive to the level of brightness to which the patient is subjected, it is necessary to have the presence of a dark tunnel through which the patient can look at the screen, an infrared, visible spectrum or infrared and visible spectrum lighting system, an image analysis software and input-output peripheral devices for allowing the interaction both with the doctor and with the patient. Other related embodiments are described.

An eye patient article station for mounting to an ophthalmic instrument stand is disclosed. The station has a body. The body has a plurality of compartments. An ophthalmic instrument stand is also disclosed having a base, a console, and the eye patient article station.

A method for determining an eye parameter of a user of a display device is provided. The eye parameter relates to a dioptric parameter of an ophthalmic lens to be provided to the user. The method includes a display device providing step, during which a binocular display device is provided to the user, an image display step, during which an image is displayed to the user when using the display device, and a display parameter modifying step, during which at least one parameter of the display device is modified so as to modify the virtual display distance of the perceived image. The display parameter modifying step is repeated until image subjective quality of the perceived image is perceived by the user as optimal. An eye parameter determining step is provided during which an eye parameter is determined based on the parameter of the display device.

An image analysis method and an image processing apparatus are disclosed. The image analysis method comprises receiving a retinal image and identifying at least one candidate object from a plurality of objects within the retinal image. Singular spectrum analysis SSA is performed on the at least one candidate object, to obtain an intensity profile along at least one cross-sectional line through the candidate object. At least one feature from the intensity profile is extracted for classification of the at least one candidate object.