Systems and methods are provided for obtaining sight screenings, optical prescriptions and fittings for eyeglasses and contact lenses. A system can be self-operated through a voice-activated response system that enables an individual to determine one's own refraction, or can be operated with the assistance of a technician. A plurality of customer diagnostic locations can include digital equipment and optical instruments to conduct the sight screening. The data generated at these locations can be transferred to a remotely located eye doctor who interacts with a customer via a live audio-video connection to assist with interpreting the data, diagnosing the customer and operating the instruments at the locations. The eye doctor diagnoses, consults and authorizes the prescriptions for the customer. The customer's data can be sent to a lens laboratory to enable the fabrication, purchasing, and delivery of eyeglasses or contact lenses.

Systems and methods are provided for obtaining sight screenings, optical prescriptions and fittings for eyeglasses and contact lenses. A system can be self-operated through a voice-activated response system that enables an individual to determine one's own refraction, or can be operated with the assistance of a technician. A plurality of customer diagnostic locations can include digital equipment and optical instruments to conduct the sight screening. The data generated at these locations can be transferred to a remotely located eye doctor who interacts with a customer via a live audio-video connection to assist with interpreting the data, diagnosing the customer and operating the instruments at the locations. The eye doctor diagnoses, consults and authorizes the prescriptions for the customer. The customer's data can be sent to a lens laboratory to enable the fabrication, purchasing, and delivery of eyeglasses or contact lenses.

Systems and methods are disclosed hosting multiple visual assessments, evaluating user performance on the assessments, and providing recommendations to assess and improve user visual performance. One method includes hosting a plurality of visual assessments; presenting, via a web portal, a user interface for selecting one or more visual assessments of the hosted plurality of visual assessments; receiving, via a web portal, a request for a user to access a visual assessment, wherein the visual assessment is an assessment out of the hosted plurality of assessments; administering the visual assessment to the user; receiving user performance data associated with a user, in response to the administered visual assessment; comparing the user performance data with performance data associated with one or more other users; and generating a report of user visual performance based on the user performance data, wherein the report is accessible to the user via the web portal.

Systems and methods are disclosed hosting multiple visual assessments, evaluating user performance on the assessments, and providing recommendations to assess and improve user visual performance. One method includes hosting a plurality of visual assessments; presenting, via a web portal, a user interface for selecting one or more visual assessments of the hosted plurality of visual assessments; receiving, via a web portal, a request for a user to access a visual assessment, wherein the visual assessment is an assessment out of the hosted plurality of assessments; administering the visual assessment to the user; receiving user performance data associated with a user, in response to the administered visual assessment; comparing the user performance data with performance data associated with one or more other users; and generating a report of user visual performance based on the user performance data, wherein the report is accessible to the user via the web portal.

A system for replicating a standardized visual acuity test, such as the 20′ Snellen test may comprise a binocular viewer attached to a smartphone. A binocular viewer may comprise a housing comprising a pair tube covers having voids allowing for viewing through a pair of lens tubes with each lens tube in visual communication with a second lens a first lens an aperture and a front cover. The optical systems use an artful combination of front and back lens surfaces, demagnification and other systems to faithfully replicate the sight lines perceived by a user of a traditional 20′ test. The system also allows for the incorporation of other tests conducted with both eyes including Color Sensitivity and Contrast, furthermore by placing a deformable, tunable lens between the second lens and the eye the device serves as an ophthalmic refractometer, allowing a Spherical Equivalent refraction estimate for each eye.

A system for replicating a standardized visual acuity test, such as the 20′ Snellen test may comprise a binocular viewer attached to a smartphone. A binocular viewer may comprise a housing comprising a pair tube covers having voids allowing for viewing through a pair of lens tubes with each lens tube in visual communication with a second lens a first lens an aperture and a front cover. The optical systems use an artful combination of front and back lens surfaces, demagnification and other systems to faithfully replicate the sight lines perceived by a user of a traditional 20′ test. The system also allows for the incorporation of other tests conducted with both eyes including Color Sensitivity and Contrast, furthermore by placing a deformable, tunable lens between the second lens and the eye the device serves as an ophthalmic refractometer, allowing a Spherical Equivalent refraction estimate for each eye.

Methods and apparatuses for joint determination of accommodation and vergence of at least one eye of a user are disclosed. The joint determination includes determining an accommodation of the eye of the user and ascertaining values for checking myopia of the eye by presenting a sign at a first distance in front of the eye to stimulate the accommodation of the eye; capturing an eye movement; ascertaining a refraction of the eye with the accommodation of the eye at the first distance; and joint determination of accommodation and vergence of the eye by ascertaining a change in the refraction of the eye with the accommodation of the eye at the first distance in relation to the accommodation of the eye at a second distance; and ascertaining the vergence of the eye from the eye movement of the eye with the accommodation of the eye at the first distance.

Methods and apparatuses for joint determination of accommodation and vergence of at least one eye of a user are disclosed. The joint determination includes determining an accommodation of the eye of the user and ascertaining values for checking myopia of the eye by presenting a sign at a first distance in front of the eye to stimulate the accommodation of the eye; capturing an eye movement; ascertaining a refraction of the eye with the accommodation of the eye at the first distance; and joint determination of accommodation and vergence of the eye by ascertaining a change in the refraction of the eye with the accommodation of the eye at the first distance in relation to the accommodation of the eye at a second distance; and ascertaining the vergence of the eye from the eye movement of the eye with the accommodation of the eye at the first distance.

An optical unit includes a light source configured to irradiate an object with light, a first polarizing element configured to convert emitted light emitted from the light source to linearly polarized light, a second polarizing element configured to cause reflection light from the object to transmit through the second polarizing element, a polarization axis of the second polarizing element being 90° orthogonal to a polarization axis of the first polarizing element, a first wavelength plate disposed to overlap with the first polarizing element and configured to convert the emitted light from the light source to circularly polarized light or elliptically polarized light, and a second wavelength plate disposed to overlap with the second polarizing element, a phase difference of the second wavelength plate being equal to a phase difference of the first wavelength plate. The first wavelength plate is revolvable and/or the second polarizing element is revolvable.

An optical unit includes a light source configured to irradiate an object with light, a first polarizing element configured to convert emitted light emitted from the light source to linearly polarized light, a second polarizing element configured to cause reflection light from the object to transmit through the second polarizing element, a polarization axis of the second polarizing element being 90° orthogonal to a polarization axis of the first polarizing element, a first wavelength plate disposed to overlap with the first polarizing element and configured to convert the emitted light from the light source to circularly polarized light or elliptically polarized light, and a second wavelength plate disposed to overlap with the second polarizing element, a phase difference of the second wavelength plate being equal to a phase difference of the first wavelength plate. The first wavelength plate is revolvable and/or the second polarizing element is revolvable.