A medical apparatus and method of operating a medical apparatus are disclosed. The apparatus includes a radiation source for emitting electromagnetic radiation towards one or both eyes of a patient; wherein the apparatus is configured to emit electromagnetic radiation having a ratio of scotopic luminous intensity to photopic luminous intensity of at least 1.85:1.

An optical stimulation system includes a lead, a control module, and a control interface. The lead includes light emitters for emitting light having wavelengths that activate light-sensitive neurons. The light-sensitive neurons generate either an excitatory response or an inhibitory response when activated depending on the wavelength of the emitted light. The control module directs the emission of light from the light emitters using a set of stimulation parameters. The control interface includes user-selectable controls to adjust the stimulation parameters. The user-selectable controls include a graphical representation of a light emitter for each light emitter. Each graphical representation includes one or more user-selectable emitter controls to indicate whether a corresponding light emitter emits light and, if so, whether the emitted light generates an excitatory response or an inhibitory response from activated light-sensitive neurons.

Methods and devices related to wound healing using phototherapy are described. Some embodiments provide an organic light-emitting diode device, such as a light-emitting device for phototherapy, comprising Ring System 1, Ring System 2, Ring System 3, Ring System 4 or Ring System 5.

A system and method for ultraviolet light-mediated hand sanitization and hands-free selection of content presented by a hand sanitizer station. The method includes detecting, using a sensor, an initiation event; responsive to the detection of the initiation event, activating an ultraviolet light source and sanitizing a surface of an object within a compartment adjacent to the ultraviolet light source; and visually presenting a graphic element associated with content on a display for presentation to a user, the display communicatively coupled to the ultraviolet light source.

System (1) for treatment by photodynamic therapy comprising an illuminating member (6) which comprises: a core (35) carrying a light emitting surface (37), and a hollow sheath (10) adapted to receive the core (35) with the light emitting surface (37) arranged within a balloon (11), the balloon (11) comprising a wall (12) which has an inner surface delimiting an internal space, and an outer surface, the wall (12) being flexible, wherein the internal space of the balloon (11) has a variable capacity, the wall (12) of the balloon (11) being elastically extendible and the balloon (11) presenting a plurality of inflated states in each of which the internal space is filled with a volume of light diffusing solution, and wherein the system further comprises a support provided with a transfer function relating the volume of light diffusing solution of each inflated state with at least one of a corresponding distribution of light power at the outer surface of the wall (12) of the balloon (11) and a corresponding time of illumination for providing a determined dose of light energy.

A method is for dynamically adjusting a circadian rhythm of an observer via a user device that includes control circuitry and an associated memory. The method includes determining a preconditioning schedule for at least one future event. Determining the schedule includes determining a preconditioning schedule for the at least one future events, including identifying a circadian shift needed, to the circadian rhythm of the observer, for the at least one future event, determining a timeframe for preconditioning, determining a per-day shift needed based upon the identified circadian shift needed and the determined timeframe, and determining if the needed per-day shift exceeds a threshold. Upon a determination that the per-day shift exceeds the threshold, the method includes setting the preconditioning schedule responsive to the determination to operate a light source to emit light based upon the preconditioning schedule.

A radiation dosimeter for measuring the dose of radiation applied during radiation therapy includes a substrate, a phosphor containing layer including a stimulable phosphor and a binder on a side of the substrate, the weight ratio of the binder to the phosphor in the phosphor containing layer is 10 or higher, a colorant, and optionally a layer in contact with the phosphor containing layer. The colorant provides a total light absorbance of the layers applied on the side of the substrate containing the phosphor containing layer of at least 0.04 at the stimulation wavelengths of the stimulable phosphor.

An optical output device for skin care, according to an embodiment of the present disclosure, comprises: a substrate disposed such that at least one light source is oriented toward a user's skin; a front cover covering one surface of the substrate; a rear cover covering the other surface of the substrate; a wearing device coupled to the rear cover so as to make contact with a part of the user's body such that the optical output device for skin care is worn by the user; and a wearing detection sensor for detecting whether the user is wearing the device.

A method and apparatus for determining the circadian input of a light source includes selecting a circadian input to be measured based on an action spectrum corresponding to a wavelength sensitivity of photoreceptors for a circadian regulation system, where the circadian input is configured to stimulate a retinaldehyde photopigment, and for measuring spectral intensity across the action spectrum to determine the circadian input of the light source.

A method and apparatus for determining the circadian input of a light source includes selecting a circadian input to be measured based on an action spectrum corresponding to a wavelength sensitivity of photoreceptors for a circadian regulation system, where the circadian input is configured to stimulate a retinaldehyde photopigment, and for measuring spectral intensity across the action spectrum to determine the circadian input of the light source.