Method and device for checking vital parameters

A device for checking vital parameters, comprising:

• at least one laser feedback interferometry unit, the laser feedback interferometry unit being configured to emit laser light into an eye of a user of the device, to receive laser light reflected by a component of the eye, and to generate signals for a laser feedback interferometry,
• wherein the device is configured to analyze beat frequencies resulting from interference between the emitted laser light and the reflected laser light, the beat frequencies corresponding to optical path differences associated with boundary surfaces of components of the eye.

A non-transitory computer-readable storage medium on which is stored a computer program including commands for checking vital parameters, the commands, when executed by a processing unit, causing the processing unit to perform the following steps:

• performing a quantitative determination of at least one of distance or thickness of components of a human eye based on data of a laser feedback interferometry measurement of the eye;
• ascertaining a change of at least one vital parameter in an ascertainment of at least one of a change over time of the determined distance or of the determined thickness of at least one of the components of the eye, the components of the eye including at least one of a cornea or an iris or a pupil or a lens or a vitreous body or a retina, and the vital parameter including at least one of an eye pressure or a high blood pressure or an arteriosclerosis or a metabolism or an abnormality of the retina in terms of color or topography or a blood clot.