191 results about "Slit lamp" patented technology

A slit lamp mounted eye imaging device for viewing wide field and/or magnified views of the retina or the anterior segment through an undilated or dilated pupil. The apparatus images posterior and anterior segments of the eye, and sections/focal planes in between and contains an illumination system that uses one or more LEDs, shifting optical elements, and/or aperture stops where the light can be delivered into the optical system on optical axis or off axis from center of optical system and return imaging path from the retina, thereby creating artifacts in different locations on retina. Image processing is employed to detect and eliminate artifacts from images. The device is well suited for retinal imaging through an undilated pupil, non-pharmacologically dilated, or a pupil as small as 2 mm. Two or more images with reflection artifacts can be created and subsequently recombined through image processing into a composite artifact-free image.

A Slit-lamp-or-Microscope-Integrated-OCT-Refractometer system includes an eye-visualization system, configured to provide a visual image of an imaged region in an eye; an Optical Coherence Tomographic (OCT) imaging system, configured to generate an OCT image of the imaged region; a refractometer, configured to generate a refractive mapping of the imaged region; and an analyzer, configured to determine refractive characteristics of the eye based on the OCT image and the refractive mapping, wherein the refractometer and the OCT imaging system are integrated into the eye visualization system.

The instrument is to be adapted to an ophthalmic slit-lamp (2,6) and includes holders for fluorescence excitation and barrier filters (3,5) to the light path and a detector system made of a linear array of photodiodes (8) with respective circuitry for reading and control. The light is focused in a chosen zone of the eye (13) inducing fluorescence by using specific wavelength. The fluorescence is measured by the detector (8) coupled to one of the eyepieces (12) of the slit-lamp (26) or to a beam-splitter (7) placed before the eyepieces (12). There is a system for digitalization of the signal from the detector (8) which is connected to an IBM compatible computer (11) where the data is stored and analyzed.

The invention relates to a microscope (10) having an illumination apparatus (26) having a light source (1) and an optical system. The light source (1) is embodied to output a coherent light beam bundle along a defined illumination beam path (2a), and the optical system in the illumination beam path (2a) encompasses a spatial light modulator (3) for modifying the illuminated field (4). A surgical microscope (10) is preferably equipped with an illumination apparatus (26) of this kind that is arranged adjustably in two directions on the surgical microscope (10).

The invention is characterised by the provision that in a slit lamp or a slit lamp projector an oblique thin glass flat with a partial reflection of the light is disposed at a defined angle relative to the optical path above the filter assembly between the latter and the "slit projector" lens (4), and in the configuration with an achromatic doublet lens between the lens assemblies in the parallel optical path, in such a way that as a result one part of the incident rays is incident as deflected light cone on a detector assembly which is arranged laterally in the housing at an angle dependent on the angle of the thin glass flat in the housing, which detector assembly measures the respectively existing luminous intensity, transmits the detected values to an evaluation and control means which compares the values so received against a predetermined maximum value, calculates the irradiation dose for the phakic or aphakic eye and, when the value is exceeded, signals this situation on an indicating alarm means and/or reduces the luminous intensity automatically to the predetermined maximum value in a controlled manner.

A method and system for identifying an astigmatic axis having a camera and light mounted to a slit lamp for taking a photo of a patient's eye. A template having a rotatable dial is set using a schematic diagram. The template is transferred to the photo and the correct axis is marked through slots on the template.

A diagnostic and therapeutic contact lens is provided for use with the slit lamp or other biomicroscope for the examination and treatment of the structures of the eye including that of the fundus and anterior chamber. The lens comprises a contacting portion adapted for placement on the cornea of an examined eye, two reflecting surfaces and a refracting portion. Light rays emanating from structures within the eye pass through the cornea and contacting portion of the lens and first reflect from the anterior reflecting surface as a positive reflection in a posterior direction. Following the first reflection the light rays reflect as a positive reflection in an anterior direction from the posterior reflecting surface to a refracting portion through which the light rays exit the lens. The lens focuses the light rays to produce a real image of the examined structures of the eye anterior of the lens or within the lens or element of the lens while optimally directing the light rays to the objective lens of the slit lamp or other biomicroscope for stereoscopic viewing and image scanning.

A portable slit-lamp apparatus, including a body (11) able to be held in the hand of an operator and a solid state lamp means (55) and associated optics (52) carried by the body for generating a narrow beam of light and projecting the beam onto the cornea of a patient s eye for reflection by structures of the eye, when the body is held at a suitable position in front of the eye. Means (22) is mounted in cooperation with the body and the solid state lamp means to detect a reflection of the narrow beam of light by structures of the eye and to make an image thereof, which image is, or is processable to provide, a digital record of the reflection.

The invention discloses an optical coherence tomographic imaging system, which comprises an OCT (optical coherence tomography) infrared source reference arm, an acquisition portion and a detection arm. The detection arm is provided with optical fibers, a collimator, an optical path galvanometer scanning system, a lens and a heat mirror along an optical path from the OCT infrared source reference arm to human eyes, infrared emitted from the lens is reflected by the heat mirror to human eyes, a slit lamp system is arranged on an optical path opposite to the optical path from the heat mirror to the human eyes, and white light from the slit lamp system passes through the heat mirror to be emitted into the human eyes. The optical coherence tomographic imaging system combines slip lamps with OCT, the OCT system is independent relatively, and mutual imaging is unaffected and mutually supplementary. OCT imaging and slip lamp imaging share a common focus, so that fundus surface or anterior segment surface information and deep structural information can be obtained simultaneously without more adjustment. The optical coherence tomographic imaging system is more reasonable in structure and more stable in imaging.

Disclosed are devices and methods for correlating or aligning pre-surgical image(s) with image(s) observed during a surgical procedure to aid in orientation of tissues and devices for performing a surgical procedure. In a preferred embodiment, the invention provides devices and methods for aligning pre-surgical image(s) of optical tissues or structures, e.g., the retina, with real-time images observed or obtained with a slit lamp, or other optical viewing device. The ability of the subject invention to correlate these images can advantageously provide the physician with greater accuracy when administering surgical treatment, such as with a laser, and can significantly reduce surgery time.

An improved applanation tonometer for measuring the intraocular pressure of an eye is configured for use with a conventional slit lamp. This applanation tonometer has a force sensor that senses the force applied by an applanation probe to flatten the cornea of the eye, while the cornea is viewed through the probe using the slit lamp. The force sensor generates a signal that corresponds to the applanation force and transmits the signal to a display and/or a data storage device.

A laser slit lamp comprising a slit lamp base, a slit lamp head and a slit lamp microscope. The laser slit lamp is connected with an applicator. It comprises a device for uniting radiation from at least two radiation sources collinearly and for directing the radiation of a treatment beam or working beam onto the location to be treated in or on the eye of a patient, a device for generating a target beam or marking beam for targeting and observing the location to be treated in or on the eye, and an adjusting device in the applicator for changing the intensity and diameter of the working beam spot used for treatment. The radiation sources are laser radiation sources arranged in the slit lamp head, in the slit lamp base or in the slit lamp microscope for generating the working beam, illumination beam and/or target beam. Devices for control, regulation and monitoring are likewise arranged in the interior of the slit lamp.

The invention relates to a remote-control slit lamp microscope which comprises an instrument table surface, wherein a base system is arranged on the instrument table surface, a microscope system is arranged on the base system, a headstock system is arranged on the instrument table surface at the front of the microscope system, the base system, the microscope system and the headstock system are internally provided with a plurality of synchronous motors, and the microscope system is internally provided with a photographing transmission component to be connected with computers; the synchronous motors are connected with the computers; and one computer transmits collected mobile signals and photographing signals of the photographing transmission component to the other computer, and the other computer displays the photographing signals and transmits the mobile signals to the other slit lamp microscope which is provided with the synchronous motors at the same position. Each movable part and each rotating part of the slit lamp microscope are additively provided with the synchronous motors, and the photographing transmission component is arranged at an observation place, so that the specific condition of patients and the mobile position of the microscope can be timely transmitted to the other place to be displayed through the network, therefore, the patients can be conveniently diagnosed.

The present invention is a modular electronic-optical-mechanical apparatus, to be used by observers in combination with a wide variety of optical image sources, for observing, acquiring and sharing the optical imagery of objects, and the audio and sounds derived from observing sessions bi-directionally in real time with audiences both remote and local. The apparatus enables observers who are local or remote from optical image sources to control and acquire optical imagery from optical image sources, where those optical image sources include microscopes, telescopes, IR scopes, spotting scopes, polarimeters, interferometer microscopes, interferometers, rifle scopes, surveillance scopes, drone optics, binoculars, theodolites, autocollimators, alignment telescopes, camera lenses, periscopes, slit lamp bio microscopes and dioptometers. The observer's audiences span the fields of training, teaching, surveying, bird watching, hunting, target shooting, photography, law enforcement, remote surveillance, local surveillance, drone flight, national defense, medicine, metrology, interferometery, astronomy, geology, biology, bacteriology, ophthalmology, entertainment, et al.

The apparatus provides an improved modified slit lamp assembly light source base and vertical support frame assemblies comprising chin and headrest vertical support legs wherein at least a lower portion of the chin rest vertical supports have been modified in at least a substantially widened fashion. The lower portion of the supports is further modified to jut back or bend away from a seated patient and toward the encroaching base of the slit lamp assembly to provide upper body accommodation while at the same time preventing a patient's upper body to encroach the base of the slit lamp. The assembly's chin/head support frame is mounted on a pivotal tabletop having a pivotal connection means, wherein the pivotal tabletop comprises a plurality of cut-out shapes each working in cooperative conjunction with the modified assemblies to accommodate obese, large-breasted patients and patients with degenerative back disorders, as well as obese doctors.

A binocular slit lamp microscope for observing a patient's eye, comprises: an objective lens; binocular eyepieces; and a mechanism that includes a plurality of optical systems and is arranged to switch the optical systems to be selectively placed in a predetermined position between the objective lens and the binocular eyepieces on an observation optical path, the mechanism including a variable magnification optical system for changing observation magnification and a viewing angle changing optical system for changing a viewing angle between a right viewing path and a left viewing path.

The invention relates to a medical examination device, in particular to an ophthalmic slit lamp microscope. The slit lamp microscope is provided with a base on which a slit lamp assembly, an objective assembly and an eyepiece assembly are arranged, wherein the slit lamp assembly comprises a light source above which a slit seat bottom bracket is arranged, a slit seat is arranged in the slit seat bottom bracket, the upper surface of the slit seat is provided with a diaphragm disc on which at least two diaphragm sheets are arranged, and the diaphragm disc is rotatablely connected with the slit seat. The slit lamp microscope adopts the rotary diaphragm disc on which the diaphragm sheets with different diameters are arranged for adjusting the facula size, and has the characteristics of clear ocular optic section, high brightness, light weight, portability and simple operation.

The invention discloses a mobile phone support for a slit-lamp microscope. The mobile phone support comprises a mobile phone clamping body, a slit-lamp microscope arm clamping body, a telescopic rod assembly and an adjusting seat of the mobile phone clamping body.The slit-lamp microscope arm clamping body is fixedly connected with the telescopic rod assembly through a support rotary bolt.The adjusting seat of the mobile phone clamping body is fixedly connected with the telescopic rod assembly through an adjusting seat rotary bolt. The mobile phone clamping body is fixedly connected with the adjusting seat of the mobile phone clamping body through a mobile phone clamping body bolt. A connecting support is connected with a slit-lamp microscope arm. The invention further discloses an application method of the mobile phone support for the slit-lamp microscope.Compared with the conventional manner of fixing a mobile phone connecting device to a slit-lamp microscope eyepiece, the invention helps avoid the repeated detachment during application and the mobile phone connecting device is installed such that an examiner conducts operation more conveniently during the process of using a mobile phone and the slit-lamp microscope.

A new and improved slit lamp microscope table with a front recess of suitable size to accommodate the torso of the occupant of a wheel chair or an obese individual. With the table set at an appropriate elevation, the handicapped individual can move his or her wheel chair to the vicinity of the table. The wheel chair is rolled toward the table until the user is located with his or her torso in the recess. Once the patient is in position, the table can be lowered to the point at which the arm rests of the table come into contact with the arms on the wheel chair and more positively hold the table and wheel chair in the desired relation.

The invention relates to a medical slit lamp microscope, in particular to an ophthalmic slit lamp microscope. The slit lamp microscope is provided with a base above which a light source device, an objective assembly and an eyepiece assembly are arranged, the base is provided with a handle above which the objective assembly and the eyepiece assembly are arranged, wherein the light source device comprises an LED light source arranged above the base, a supporting cylinder arranged above the light source and a reflecting prism arranged at the top of the supporting cylinder, and the reflecting prism is positioned in front of an objective. The handheld slit lamp microscope adopts a white LED with high brightness as an illumination light source, and has the characteristics of reasonable optical system design, clear eye optical section, high brightness, light weight, portability and simple operation.