14 results about "Ophthalmoscopes" patented technology

The technical scheme of the utility model discloses a small fundus imaging device which comprises an outer cylinder and an inner cylinder which are telescopically connected with the outer cylinder through a pull-rotation connecting mechanism. The ophthalmoscope is arranged in the inner cylinder; the eye curtain is movably connected with the inner cylinder through a rotary adjusting mechanism and used for adjusting the eyes of the user; and the camera shooting base is detachably connected with the outer cylinder and is used for shooting the eye actions of the user through the ophthalmoscope. The small fundus imaging device is small and exquisite in structure, convenient to carry about in daily life, simple in structure and convenient to operate, fundus imaging can be achieved only by pulling the outer cylinder and the inner cylinder open, rotating and fixing the outer cylinder and the inner cylinder, separating the eyelids of a user through the rotating ring to expose eyeballs and cooperating with interactive games of a mobile phone end or other mobile ends, and the fundus imaging efficiency is improved. The detection information result can be obtained through data analysis, the user can achieve fundus detection by himself / herself without going to a medical institution, and the early diagnosis rate and the mother and infant safety are greatly improved.

A method is provided for setting a starting position for focusing an optical eye observation device (9) upon insertion of an ophthalmoscope magnifying glass (1) into the observation beam path of the optical eye observation device (9). In the method, the insertion of the ophthalmoscope magnifying glass (1) into the observation beam path is detected, and upon detection of the insertion of the ophthalmoscope magnifying glass (1), the focus position (FP) of the optical eye observation device (9) is automatically moved to a starting position.A focus position (FP) of the optical eye observation device (9) is used as the starting position, in which an aerial image (LB) of the retina (15) generated by a predetermined ophthalmoscopy magnifier (1) from the group of ophthalmoscopy magnifiers (1, 1', 1") that can be introduced into the observation beam path of the optical eye observation device (9) lies within a region (B) around the focus position (FP), the extent of which corresponds to a maximum of twice the extent of the depth of field (TSB) of the optical eye observation device (9).

The invention relates to the technical field of fundus detection, in particular to a fundus three-dimensional topography measurement system and method based on human eye dynamic response coding, which can realize novel fundus three-dimensional topography measurement which does not depend on a precise mechanical structure, does not need binocular registration, and is simple to assemble and operate, simple in system and controllable in cost. The dynamic adjustment capability of a crystalline lens of a human eye is used as an imaging driving mechanism, the human eye is guided to continuously adjust the focal length by projecting a dynamic virtual image with far and near changes, a focus stack is generated through coding for three-dimensional reconstruction, finally, a fundus color picture and three-dimensional structure data of the fundus color picture are synchronously obtained, and accurate measurement of the fundus three-dimensional shape is achieved. The method does not need complex registration operation of binocular stereo imaging and image texture dependence during three-dimensional reconstruction, and also does not need complex scanning mechanisms and precision machines of laser scanning ophthalmoscopes, optical coherence tomography and other technologies, so that the system hardware cost and the operation difficulty are reduced, and the method is easier to popularize and apply in basic medical scenes.

A device for diagnostic and therapeutic procedures in ophthalmology, configured to deliver a photothermal treatment as well as a photobiomodulation treatment tuned to specific chromophores. The device may include a confocal scanning ophthalmoscope and a spectrometric dosimetry channel and is equipped with several safety features including a continuous automatic scanning of the eye and the eyelids.

The utility model discloses a fundus inspectoscope support with an illumination adjusting function, and relates to the technical field of ophthalmoscopes, the fundus inspectoscope support comprises a tripod leg, a base and an ophthalmoscope frame, the bottom of the tripod leg is provided with an anti-skid pad, the tripod leg is installed on the side surface of a knob, the knob is provided with a rotating head, the upper part of the rotating head is provided with a vertical support rod, and the vertical support rod is provided with an illumination adjusting device. A mounting head is arranged on the vertical supporting rod, a screw rod is mounted on the mounting head, a baffle is mounted at one end of the screw rod, an ophthalmoscope frame is mounted at the other end of the screw rod, a transverse supporting rod is mounted on the side face of the rotating head, and a light supplementing lamp is mounted at the end of the transverse supporting rod. In different use environments, light conditions may differ (e.g., hospital or clinic light intensity and type). According to the utility model, the position and the intensity of the light supplementing lamp are adjusted to ensure that the illumination of the ophthalmoscope reaches the optimal state, so that clear and accurate retina images are provided, and the diagnosis effect is improved.

An ophthalmoscope provides one or more eyepiece lenses that provide an adjustable entrance pupil allowing the entrance pupil of the ophthalmoscope to match the entrance pupil of the eye to increase the collected image information within the constraints of the eye pupil size, reducing scan times for given light energy.

The utility model belongs to the technical field of medical detection, and particularly discloses a direct ophthalmoscope digital photographing system which comprises a laser assembly, a condensation assembly and an eyepiece. An observation area is arranged at the intersection of the laser assembly and the condensation assembly, the eyepiece concentrates an image to be collected in the observation area through the second parallel lens and the condensation assembly, and the auxiliary optical conversion assembly and the photographing assembly capture a fundus optical image of the fundus; recording the fundus optical image acquired on the eyepiece based on the optical conversion assembly to form a first image file; collecting the fundus optical image according to a preset frequency based on the photographing assembly to form a second image file, and sending the second image file to the computer terminal through the communication assembly; according to the utility model, the traditional optical direct ophthalmoscope is digitally modified, and the digital camera and the optical conversion system are combined, so that high-definition recording and lesion analysis are realized, pupil expansion is not needed, and carrying and operation are convenient.

Surgical microscope (2, 48) for viewing an eye (77), having a main objective (5) and a fundus imaging system (71) which can be positioned in the beam path (7) between the eye (77) and the main objective (5), said system comprising an ophthalmoscopy magnifying glass (73), characterized in that the main objective (5) has a focal length in the range between 90 mm and 160 mm, and the fundus imaging system (71) comprises an optical group (81) whose dispersion properties are adapted to the dispersion properties of the ophthalmoscopy magnifying glass (73) in such a way that the optical group (81) compensates for a chromatic aberration of the ophthalmoscopy magnifying glass (73).

The present invention discloses an automatic eye movement tracking method, apparatus, device, and computer storage medium, comprising: inputting a set of ophthalmoscopic fundus images to be detected into a preset eye movement judgment neural network to obtain a predicted eye movement state corresponding to each ophthalmoscopic fundus image; when it is determined that the eye movement predicted state corresponding to a certain ophthalmoscopic fundus image is the start of an eye movement, determining the ophthalmoscopic fundus image as a first target image and inputting it into a preset optic disc positioning neural network to obtain optic disc positioning information; when it is determined that the eye movement predicted state corresponding to a certain ophthalmoscopic fundus image is the end of an eye movement, determining the ophthalmoscopic fundus image as a second target image, and obtaining offset information corresponding to the optic disc based on the first target image and the second target image. It can be seen that the present invention can continuously track the eyeball, accurately determine the start and end states of an eye movement, and thus calculate accurate eye movement offset information, effectively improving the efficiency and accuracy of eye movement tracking.

The application relates to a non-invasive intraorbital pressure absolute value measuring system and method thereof, which comprises a retinal vascular blood pressure meter, an ophthalmoscope, an ultrasonic diagnostic instrument and a processor, and the method comprises the following steps: applying pressure to an eyeball by using the retinal vascular blood pressure meter and measuring intraocular pressure change data; simultaneously observing the change state of a retinal central vein during the pressure application process by using the ophthalmoscope; when the retinal central vein is observed to be sunken by using the ophthalmoscope, recording the intraocular pressure data measured by the retinal vascular blood pressure meter at this time, which is retinal vein pressure data; respectively measuring the optic nerve sheath diameter data at the positions of 0 mm and 3 mm behind the eyeball wall by using the ultrasonic diagnostic instrument; and calculating the intraorbital pressure data by the processor according to the measured retinal vein pressure data, the optic nerve sheath diameter data at the positions of 0 mm and 3 mm behind the eyeball wall. Compared with the prior art, the application can non-invasively and accurately measure the intraorbital pressure data.

Certain embodiments disclose a contact lens holder comprising: a rim forming a lens receiving seat for receiving a lens; and a flange integrally formed with and extending from the rim, the flange including at least one tab, where at least one of a rear surface of the flange and a rear surface of the at least one tab includes a microstructure.

A method includes receiving an electronic fundus scan. The method also includes determining retinal disease information based on receiving the electronic fundus scan.

A body-mounted laser-indirect ophthalmoscope (LIO) system for delivering laser energy into an eye of a patient includes a wearable assembly which secures a control module, laser module, and / or power module (including a battery) to the body of the user. The control module receives activation signals and parameter information from an activation unit a mobile computing device and controls the laser energy emitted by the laser module based on the parameter information. The parameter information is user-provided via a graphical user interface or by voice control (e.g. recognizing voice commands in audio data captured by the mobile computing device). In the preferred embodiment, the wearable assembly includes only a headset, in which case the control, power and laser modules are provided on the headset; however, an alternative embodiment includes a utility belt from which a fiber optic cable for emitting the laser energy is routed to the headset.

To provide an optical magnifying device suitable for reflecting a magnified image of an object to a user's eye. [Solution] The optical magnifying device includes a support unit 1, a lens barrel unit 2 including two support arms mounted on the support unit 1 and spaced apart, and an attachment arm 22 extending along the left-right direction and connected to the two support arms, and a mirror unit 3 including an objective lens assembly 31 mounted on the lens barrel unit 2 and mounted on the two support arms, and an ophthalmoscope assembly 32 removably attached to the attachment arm 22 and facing the objective lens assembly 31 so that there is a gap between them, the ophthalmoscope assembly 32 having a first positioning portion removably connected to the attachment arm 22, and the mirror unit 3 is configured to form an optical path that constructs a magnified image of an object and reflects the magnified image at the ophthalmoscope assembly 32 to the user's eyes.