Abstract: The invention relates to a method and furthermore a device from the examination of cavities, in particular an eye, by means of laser scanning. The aim of the invention is to carry out further investigations, above all with respect to possible diseases. Said aim is achieved, whereby the determination of the cavity wall thickness, in particular of retinal cavities is carried out. The external diameter and the internal diameter are determined by scanning doppler laser and the wall thickness determined from the data recorded thus.

Abstract: A system for diagnostically evaluating the health of tissue within the fundus of an eye includes a fs laser source, an adaptive optical assembly, an imaging unit, and a computer. The adaptive optical assembly focuses a laser beam to a focal point in the fundus of the eye, and scans the fundus tissue according to a predetermined scanning pattern. Illumination of anisotropic tissue within the fundus, such as the photoreceptors and the Henle-fiber layer, induces a Second Harmonic Generation (SHG) response. Red photons, with a wavelength (?) of about 880 nm, are converted to blue photons, with a wavelength of ?/2, through the process of photon conversion. An imaging unit senses the blue photon return light, and uses the return light to generate an image of the fundus. The computer processes the image, and compares it to a template of healthy tissue to evaluate the health of the imaged tissue.

Abstract: A medical apparatus especially for lowering intraocular pressure by acting on the Schlemm's canal and on the tissue of the trabecular meshwork directly in contact with the Schlemm's canal, including a probe containing a photoconductor which is curved or elastically or plastically deformable to a curved configuration and which is connected to a laser, the photoconductor having a surface coating having at least one emission window therein facing the inner curvature of the photoconductor, the emission window permitting a laser beam to issue from the photoconductor at an angle of 90.degree. to the curvature of the photoconductor.

Abstract: A method for measuring the flow rate of a liquid, particularly of blood, in which the frequency shift of a laser beam reflected from the liquid is determined according to the optical Doppler effect. This method and the apparatus provided for its implementation are designed so as to enable reliable measurement of the flow rate of the flowing medium which is resolved both spatially and with respect to time. In accordance with the invention at each scanning point a number of N measured values is collected corresponding to the reflected light, N being a whole number equal to or larger than 2; the Doppler shift is calculated from the time variation of the thus measured intensity of the reflected light at the respective scanning points, and the flow rate is determined from the Doppler shift at each point of the scanning pattern.

Abstract: An apparatus for imaging an object, particularly a three-dimensional object, (20) including a first and a second scanner (1, 2), each having a mirror (3, 4) in order to scan the object in two directions, especially orthogonal directions. The apparatus has a compact construction while still assuring optically perfect scanning in that the mirror (3) of the first scanner (1) is disposed a distance (7) from the axis of rotation of the first scanner, and the center or the pivot point of the second scanner (2) is disposed midway between the axis of rotation and the mirror (3) of the first scanner (1).