A method for optimizing an optical aid by way of automatic measurement of the subjective visual performance, a method for producing a correspondingly optimized optical aid, an apparatus for producing optical aids, a computer program having a program code for carrying out the optimization method, which program can be run on a processor, and a non-transitory storage medium comprising the computer program stored thereon are disclosed. The method for optimizing the optical aid includes the automatic determination of subjective visual acuity using machine learning.

Photo-stress by focal light bleaches the retina and temporarily reduced retinal function. Recovery from suppression is measurable by monocular and binocular endpoints, when recovery is prolonged a disease is suspected. The monocular endpoint is the moment the dark central afterimage representing the macula becomes the same brightness as the peripheral ring representing unstimulated retina and the binocular endpoint is brightness equality of rivalrous stimuli. Four embodiments are described for measuring relative brightness sense photo-stress utilizing monocular and binocular methodology.

The invention relates to a method for characterizing a visual system of a subject using measures of the sensitivity to contrast, the visual system comprising visual signal processing elements each having an impact on the sensitivity to contrast, wherein a visual test where visual patterns having different spatiotemporal frequencies and with varying luminance levels and with varying levels of visual degradation of the visual patterns are shown to a subject to measure the sensitivity to contrast of said subject, is performed, wherein a predetermined response model of a visual system is preestablished on the basis of a determination of the visual signal processing element that predominantly limits the sensitivity to contrast for each value of luminance and spatiotemporal frequency, said predetermined response model relating the visual signal processing elements predominantly limiting the sensitivity to contrast to the luminances and to the spatiotemporal frequencies, wherein at least one of the visual signal processing elements is selected in order to be investigated, wherein at least one visual test is performed on the visual system of the subject, said visual test being optimized according to said at least one selected visual signal processing element, during the optimized visual test, the variations of the luminance levels and of spatiotemporal frequencies being limited within a range of luminance and a range of spatiotemporal frequency where the predetermined response model locates the visual signal processing element as predominant in limiting the sensitivity to contrast.

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

The present invention relates to indirect diagnosis of deficiency of Vitamin A, without taking blood sample. The instrument combines two simple principles for full functionality, An individual having Vitamin A deficiency can be differentiated from a healthy person on 2 basis: (1) The ability to clearly identify pictorial representation of an object in the environment having low amount of light intensity; and (2) The time being taken for eyes to adapt to a significantly different lighting situation. The standardization of the instrument has to be done in nearby area in relatively healthy population having rich diet in vitamin A or it is to be adopted based on findings of other area, The diagnosis can be confirmed after repeating the same set of tests, after giving vitamin A in appropriate dosages, and allowing enough time to pass for that dosage to take an effect (generally, 1 to 2 weeks).

The present disclosure provides an improved method for photobleaching an eye of a subject. The disclosed method may be used in a number of psychophysical test methods, including, but not limited to, measurement of dark adaptation. The improved method for photobleaching involves at least one of the following improvements: (i) the use of a bleaching light emitting a particular wavelength of light or a tailored spectrum of wavelengths; (ii) restricting or otherwise spatially tailoring the region of the retina that is subject to photobleaching; and (iii) utilizing a bleaching light having an intensity that is at or below the intensity of ambient daylight. The present disclosure additionally provides a combination of a photobleaching light and an apparatus to administer a psychophysical test suitable for use in practicing the disclosed methods.

A subjective optometry apparatus includes a light projecting optical system that has a visual target presenting portion for emitting a target light flux and projects a target light flux emitted from the visual target presenting portion toward a subject eye, a calibration portion that is disposed in an optical path of the light projecting optical system and changes optical characteristics of the target light flux, an acquisition portion that acquires a near distance objective eye refractive power that is an eye refractive power of the subject eye objectively measured in a near distance viewing state, and a control portion that controls an operation for acquiring a near distance subjective eye refractive power that is a subjective eye refractive power of the subject eye measured in a near distance viewing state, based on the near distance objective eye refractive power.

The present invention comprises: an ophthalmological device 200 that is provided with a measurement unit 230; a measurement information processing unit 221 that converts measurement information, which has been obtained by the measurement unit 230, into image information and non-image information other than the image information; an ophthalmological device display unit 250 of the ophthalmological device 200 that displays the image information; a terminal device 400 that is arranged remotely from the ophthalmological device 200 and that is provided with a terminal display unit 340; a display unit imaging device 400 that is attached to the ophthalmological device 200 and that captures the entirety of the image which is displayed on the ophthalmological device display unit 250; an image transmission unit 480 that transmits, to the terminal device 300, the image which has been captured by the display unit imaging device 400; a measurement information transmission unit 222 of the ophthalmological device 200 that transmits the measurement information to the terminal device 300; and an information integration unit 321 that integrates the image information which has been transmitted from the image transmission unit 480 and the measurement information other than the image information so as to display these pieces of information on the terminal display unit 340.

The present invention comprises: an ophthalmological device 200 that is provided with a measurement unit 230; a measurement information processing unit 221 that converts measurement information, which has been obtained by the measurement unit 230, into image information and non-image information other than the image information; an ophthalmological device display unit 250 of the ophthalmological device 200 that displays the image information; a terminal device 400 that is arranged remotely from the ophthalmological device 200 and that is provided with a terminal display unit 340; a display unit imaging device 400 that is attached to the ophthalmological device 200 and that captures the entirety of the image which is displayed on the ophthalmological device display unit 250; an image transmission unit 480 that transmits, to the terminal device 300, the image which has been captured by the display unit imaging device 400; a measurement information transmission unit 222 of the ophthalmological device 200 that transmits the measurement information to the terminal device 300; and an information integration unit 321 that integrates the image information which has been transmitted from the image transmission unit 480 and the measurement information other than the image information so as to display these pieces of information on the terminal display unit 340.