Abstract: The present disclosure relates to an eye treatment system for performing laser surgery on an eye which includes a laser optical system. The laser optical system includes a scanning system for scanning a focus of a laser beam of the laser light within a cornea of the eye in three dimensions. The laser optical system further includes a focusing optical system. The scanning system is in the beam path of the laser beam between the laser source and the focusing optical system. The eye treatment system further includes a contact element which is in the beam path of the laser beam between the focusing optical system and the eye. The contact element has a contact surface for contacting a cornea of the eye. At least a portion of the contact surface has a shape, which is convex toward the cornea.

Abstract: The present disclosure relates to a system for treating a cornea of a human eye using laser radiation. The system includes a laser system and a control system, which is configured to control the laser system for performing (a) a reshaping laser ablation for ablating a portion of a stroma of the cornea; and (b) a laser surface treatment. The laser surface treatment is a substantially optically non-corrective treatment of a reshaped surface portion. The reshaped surface portion represents a corrective or non-corrective reshaping of an anterior surface of the cornea and is formed using the reshaping laser ablation. A maximum ablation depth of the laser surface treatment is less than 5 micrometers or less than 3 micrometers.

Abstract: A ventilation device for filtering air and for separating water aerosols from air may include at least one filter element, at least one housing, at least one fan, and at least one flow adapter. The filter element may be secured in the housing such that air is flowable through the housing from an inlet opening of the housing to an outlet opening of the housing in a flow direction. The fan may be secured on the outlet opening downstream of the housing in the flow direction. The flow adapter may be secured on the inlet opening upstream of the housing in the flow direction. A coupling frame may be secured in an airtight manner between the housing and the flow adapter transversely to the flow direction. The filter element may have a circumferential sealing edge that seals the housing around the inlet opening to the coupling frame.

Abstract: A ventilation device for filtering air and for separating water aerosols from air may include at least one filter element, at least one housing, at least one fan, and at least one flow adapter. The filter element may be secured in the housing such that air is flowable through an inlet opening of the housing to an outlet opening of the housing in a flow direction. The fan may be secured on the outlet opening downstream of the housing in the flow direction. The flow adapter may be secured on the inlet opening upstream of the housing in the flow direction. A coupling frame may be secured in an airtight manner between the housing and the flow adapter. The coupling frame may include a discharge channel arrangement for draining water collected in the at least one filter element.

Abstract: New 1,3-identically substituted-triazine-2,4-diones of the formula ##STR1## in which R is alkyl with 2 to 6 carbon atoms, cycloalkyl with 5 or 6 carbon atoms, phenyl, naphthyl, or phenyl or naphthyl substituted by halogen, nitro or alkyl with 1 to 4 carbon atoms, andR.sup.