Embodiments of the invention are directed towards systems, methods and computer program products for providing improved eye tests. Such tests improve upon current eye tests, such as visual field tests, by incorporating virtual reality, software mediated guidance to the patient or practitioner such that more accurate results of the eye tests are obtained. Furthermore, through the use of one or more trained machine learning or predictive analytic systems, multiple signals obtained from sensors of a testing apparatus are evaluated to ensure that the eye test results are less error-prone and provide a more consistent evaluation of a user's vision status. As it will be appreciated, such error reduction and user guidance systems represent technological improvements in eye tests and utilize non-routine and non-conventional approaches to the improvement and reliability of eye tests.

A portable ocular screening device for tracking macular degeneration having a portable body including a graduated focusing mechanism including an inner chamber. The apparatus also includes a monocular eyepiece disposed on the graduated focusing mechanism and a display screen and a processor disposed within the inner chamber. Additionally, a method of monitoring macular degeneration includes providing a monocular screening device having a display screen disposed within a body of the screening device. The method further includes displaying an image and also providing a prompt in response to the display of the image. Subsequently, the method includes receiving a response via an input device, the response indicative of a user's perception of the image and evaluating the response to determine if the response indicates a user accurately perceived the first image.

A portable ocular screening device for tracking macular degeneration having a portable body including a graduated focusing mechanism including an inner chamber. The apparatus also includes a monocular eyepiece disposed on the graduated focusing mechanism and a display screen and a processor disposed within the inner chamber. Additionally, a method of monitoring macular degeneration includes providing a monocular screening device having a display screen disposed within a body of the screening device. The method further includes displaying an image and also providing a prompt in response to the display of the image. Subsequently, the method includes receiving a response via an input device, the response indicative of a user's perception of the image and evaluating the response to determine if the response indicates a user accurately perceived the first image.

A method for determining at least one optical parameter of an eye of a person comprising displaying at least two sharp images on a retina of the eye of the person, the at least two images comprising a target and being carried by two light beams focused substantially in the plane of a pupil of the eye at at least two different positions, adapting a parameter of the target in each image based on feedback of the person relative to the change of the parameter of the target in the image, and determining the at least one optical parameter of the person's eye based on the adaption of the parameter of the target in each image.

A method for determining at least one optical parameter of an eye of a person comprising displaying at least two sharp images on a retina of the eye of the person, the at least two images comprising a target and being carried by two light beams focused substantially in the plane of a pupil of the eye at at least two different positions, adapting a parameter of the target in each image based on feedback of the person relative to the change of the parameter of the target in the image, and determining the at least one optical parameter of the person's eye based on the adaption of the parameter of the target in each image.

In certain embodiments, double-vision-related vision defects determinations or modifications may be facilitated. In some embodiments, a stimulus may be to be presented at a first time at a position on a first display for a deviating eye of a user (e.g., without a stimulus being presented on a second display of for a reference eye of the user) to cause the deviating eye to fixate on the position on the first display. A deviation measurement for the deviating eye may be determined based on an amount of movement of the deviating eye occurring upon the presentation on the first display for the deviating eye at the first time. In some embodiments, a modification profile associated with the user may be determined based on the deviation measurement, where the modification profile includes one or more modification parameters to be applied to modify an image for the user.

In certain embodiments, double-vision-related vision defects determinations or modifications may be facilitated. In some embodiments, a stimulus may be to be presented at a first time at a position on a first display for a deviating eye of a user (e.g., without a stimulus being presented on a second display of for a reference eye of the user) to cause the deviating eye to fixate on the position on the first display. A deviation measurement for the deviating eye may be determined based on an amount of movement of the deviating eye occurring upon the presentation on the first display for the deviating eye at the first time. In some embodiments, a modification profile associated with the user may be determined based on the deviation measurement, where the modification profile includes one or more modification parameters to be applied to modify an image for the user.

A self service refraction instrument includes an adjustable optical assembly coupled within an instrument housing between an eyepiece and a viewing target display. A defocus correcting component includes a pair of adjustably spaced apart spherical lens elements. An astigmatism correcting component includes a pair of cylindrical lens elements that are synchronously rotatable in opposite directions for adjusting cylinder power and in a same direction for adjusting axis angle. A decision module informed by visual acuity scores for an autorefraction Rx or an old prescription Rx of a test subject, the test subject's communicated choices among presented options of corrective optics prescriptions and a refraction rules database that decides to next test sphere, axis or cylinder, at a specific step size of increments, or to test visual acuity, or to end a test.

A self service refraction instrument includes an adjustable optical assembly coupled within an instrument housing between an eyepiece and a viewing target display. A defocus correcting component includes a pair of adjustably spaced apart spherical lens elements. An astigmatism correcting component includes a pair of cylindrical lens elements that are synchronously rotatable in opposite directions for adjusting cylinder power and in a same direction for adjusting axis angle. A decision module informed by visual acuity scores for an autorefraction Rx or an old prescription Rx of a test subject, the test subject's communicated choices among presented options of corrective optics prescriptions and a refraction rules database that decides to next test sphere, axis or cylinder, at a specific step size of increments, or to test visual acuity, or to end a test.

Systems and methods for vision test and uses thereof are disclosed. A method may be implemented on a mobile device having at least a processor, a camera and a display screen. The method may include capturing at least one image of a user using the camera of the mobile device; interactively guiding the user to a predetermined distance from the display screen of the mobile device based on the at least one image; presenting material on the display screen upon a determination that the user is at the predetermined distance from the display screen; and receiving input from the user in response to the material presented on the display screen. The material presented on the display screen may be for assessing at least one characteristic of the user's vision. Mobile devices and non-transitory machine-readable mediums having machine-executable instructions embodied thereon for assessing a user's vision also are disclosed.