A quality control method for optometric measurements includes the following steps: (a) recording, via computer, a first record (14) that includes at least one first value of a first identifier (12), enabling identification of a glasses wearer (1), and at least one other value of another identifier (13) enabling identification of an optometric apparatus (15) on a first optometric measuring site (10); (b) carrying out at least one optometric measurement (16) of the wearer; (c) sending, to a second site (20), a digital measurement data set (18) including the optometric measurement result from step (b), the digital data set being linked, via computer, to the first record; and (d) digitally processing the optometric measurement result from the first record (14) on the basis of a digital data reference system (45) and the values of the respective identifiers of the glasses wearer and the optometric apparatus of the first record.

Provided are systems and methods for noninvasively assessing intracranial pressure by controllably osculating at least a portion of a subject's ocular globe while applying a force sufficient to collapse an intraocular blood vessel and correlating the collapse pressure to intracranial pressure. Also provided are ophthalmic components useful in ophthalmic imaging applications, such as retinal, corneal, and pupil imaging. The components may include an optical contact surface that has a radius of curvature that is greater than the radius of curvature of a subject's cornea.

Provided are systems and methods for noninvasively assessing intracranial pressure by controllably osculating at least a portion of a subject's ocular globe while applying a force sufficient to collapse an intraocular blood vessel and correlating the collapse pressure to intracranial pressure. Also provided are ophthalmic components useful in ophthalmic imaging applications, such as retinal, corneal, and pupil imaging. The components may include an optical contact surface that has a radius of curvature that is greater than the radius of curvature of a subject's cornea.

Systems, devices, and methods for detecting a visual indicator of an occluder for an eye examination are provided. In one example, a device may be used to administer an eye examination by detecting, via a camera of the device, a visual indicator located on an occluder while the occluder is covering at least a portion of a user's face. The device can configure a graphical user interface to display, at a display screen of the device, an eye examination administered to the user. The device can output, via the display screen, a result of the eye examination based on information encoded by the visual indicator. In some implementations, the detecting may include detecting an opaque surface of the occluder covering an eye of the user. In some implementations, the detecting may include detecting a lens of the occluder covering an eye of the user.

A retina viewing system and method of using the same includes an ophthalmic microscope, a disposable lens attachment, and an electronic control unit (ECU). The microscope has an optical head and a set of internal focusing lenses, the latter providing the microscope with a variable working distance or focal length. The disposable lens attachment includes a resilient body with a proximal end connected to the optical head and a distal end connected to a high-power/high-diopter distal lens. The ECU executes instructions for viewing a retina or other intraocular anatomy of a patient eye. Execution of the instructions causes the ECU to automatically adjust the variable working distance or focal length of the microscope when viewing an image of the retina through the distal lens.

An ophthalmic instrument for self-tonometry includes a body that houses a measurement device for measuring intraocular pressure of a user's eye and at least one anatomical fixation point for adjusting a distance between the anatomical fixation point and a center of the user's eye. An eye identification device attached to the body uses a gyroscope or other sensor to allow identification of a left eye or a right eye being measured.

In some implementations, a font generator device may receive input text that includes one or more characters. The font generator device may generate a disability-oriented font based on one or more parameters that relate to a vision deficiency, wherein the disability-oriented font is readable by users that have the vision deficiency and unreadable by users that do not have the vision deficiency. The font generator device may transform the one or more characters included in the input text into the disability-oriented font. The font generator device may generate an output that represents the input text using the disability-oriented font based on transforming the one or more characters included in the input text into the disability-oriented font.

A system for guiding a patient during an ophthalmic examination includes a display screen and a patient guidance system (PGS). The PGS receives an enabling signal that identifies an examination device to be used during the examination. In response to receiving the enabling signal, the PGS may display a visible target via the display screen and/or play an audible sound via a speaker. The audio sound is a clear indication of the examination sequence performed using the examination device. The visible target includes patient instructions corresponding to an examination sequence performed using the examination device. The PGS automatically modifies a characteristic of the visible target or audio signal when the patient does not comply with the patient instructions during the examination sequence.