48 results about "Eye anterior segment" patented technology

The invention discloses an eyeball tumor area real-time positioning method based on motion features of an eyeball. The eyeball tumor area real-time positioning method comprises the following steps of extracting an eye anterior-segment tissue information, conducting calibration and three-dimensional reconstruction on the eye anterior-segment tissue information to obtain shifting parameters before and after eyeball motion, establishing a three-dimensional eyeball model based on a CT image, and establishing the coordinate relation between an eye anterior segment feature structure and an intraocular tumor position. According to the eyeball tumor area real-time positioning method, an anterior-segment image obtained through real-time OCT tracking is utilized, and then the tumor is accurately positioned in a radiation area through processing technologies including image reconstruction, registering and the like. The invention further discloses an imaging device for extracting the eye anterior-segment tissue information. The imaging device for extracting the eye anterior-segment tissue information comprises an OCT light source, a beam splitter, a sample arm, a reference arm and a feedback device. A real-time positioning tracking system provides in-vitro noninvasive positioning and can achieve the purposes of improving positioning accuracy and radiation dose and local control rate of the ocular tumor, decreasing surrounding normal radiation dose and injury and the like.

A cornea shape measurement apparatus outputs data useful for prescription as well as injection and installation of a TORIC-IOL. This apparatus includes: a projecting optical system projecting an index for measurement onto a cornea; an illuminating optical system illuminating an anterior segment on which a reference mark is placed; an imaging optical system capturing an anterior segment image containing the reference mark and an image of the index reflected from the cornea; an image processor overlaying an astigmatic axis mark indicating a direction of an astigmatic axis of the cornea, which is calculated based on the index image, on the anterior segment image; and a controller displaying the anterior segment image, which contains the astigmatic axis mark, on a display.

The invention provides an imaging device for realizing an anterior segment OCT integrated biological measuring instrument function based on a beam splitter prism. The imaging device divides referencearm light into two beams through the beam splitter prism, when a movable shielding plate is located at a first position, the first beam of reference arm light can be shielded, so that only a second plane mirror can reflect and interfere with a sample arm, and imaging of the anterior segment is realized independently; and when the movable shielding plate is located at a second position, a first plane mirror and the second plane mirror can both reflect and interfere with the sample arm, and imaging is carried out in the same image at the same time, so that the purpose that the positions of the cornea and the retina are still relatively fixed in the involuntary movement process of the eyeball is achieved, the interference of eye movement and other factors on the numerical value is reduced, the accuracy of eye axis measurement is improved, and the imaging device is particularly suitable for special crowds with poor gaze such as nystagmus and Alzheimer's disease.

An ophthalmic measurement system and method are used for detecting checked eyes. The ophthalmic measurement system includes a switching scanning element, an eye anterior segment light path assembly, an eye posterior segment light path assembly, a light splitting element and a main body module. An optical path can be switched between the eye anterior segment light path assembly and the eye posterior segment light path assembly by the switching scanning element, and an eye anterior segment and an eye posterior segment of the checked eyes are scanned. The invention provides another technical scheme which can realize the switching of scanning of the eye anterior segment and the eye posterior segment of the checked eyes to determine the axis length of the checked eyes, and the disadvantages ofcomplex structure and high cost of the prior art are overcome.

The invention provides an ophthalmic detection system, which comprises a sample arm, a side eye photographing imaging module and a main body module, the sample arm detects the anterior segment and posterior segment of an eye to-be-detected by using measuring light, the side eye photographing imaging module monitors the eye movement of the eye to-be-detected in the detection process, and the main body module is used for controlling the sample arm and the side eye photographing imaging module. The invention further provides an ophthalmic detection method. According to the ophthalmological detection system and the ophthalmological detection method, the influence of eye movement of the eye to-be-detected on the detection result can be reduced.

The invention discloses a method for expressing corneal irregularity structure changes based on change consistency parameters of an anterior segment tomography technology. According to the method, a method for establishing objective indexes of parameter change relative positions is provided, the positions, where morphological changes may occur, of the irregular corneas are comprehensively expressed, the early diagnosis performance of irregular corneal diseases such as the conic corneas can be theoretically improved, and meanwhile the complexity of combined interpretation of a large number of parameters in clinical actual work is reduced.

The invention discloses eye drops for treating incipient cataract and a preparation method thereof. Raw materials contain pirenoxine sodium, aspirin, taurine, selenium, zinc and glutathione. Auxiliary materials contain a diluent, a humectant, an isoosmotic adjusting agent, a preservative and an antioxidant. The active components of the eye drops have remarkable synergetic effects. Thus, the eye drops have a good curative effect on incipient cataract, and are especially suitable for patients with incipient senile cataract, mild diabetic cataract or complicated cataract. By the use of the eye drops, physiological function of human body can be improved, blood circulation and nutrition metabolism of anterior segment can be accelerated, phacocyst permeability can be improved and physiologic barrier effect can be recovered, lens turbidity is effectively controlled, and turbidity absorption is promoted.

The invention discloses a cataract and after cataract analysis system and device based on a mobile terminal. The cataract and after cataract analysis system and device judge the severity degree of cataract/after cataract based on the clarity degree of an eye fundus image, and judge the opacity degree of cataract and after cataract through an anterior segment image of the eye. The clarity degree ofthe eye fundus image and the matching degree of vision are more related and more direct, the requirement for an operator is lower, illness state evaluation is conducted through a deep learning artificial intelligence system, the grading accuracy of the opacity degree of cataract is higher, a diagnosis and treatment suggestion module is constructed, and the right to obtain the eye image is given to an intelligent terminal user rather than other medical institutions at different levels. The system and the device have the advantages that the audience range is wider and more popular to a certainextent, the problems of time and labor waste and high price of general patient examination are solved, and a portable emerging medical solution with a prospect is realized.

The invention is directed to an arrangement and a method for measuring the anterior segment of the eye using interferometric means. The eye is illuminated by a convergent beam bundle and aligned with the optical axis of the measuring device by generating directional stimuli and accommodation stimuli by means of a display which is mirrored into the beam path.

A drug support body is provided that can be used to appropriately administer a drug to the anterior segment of the eye while the production cost is reduced. A drug layer containing a drug component to be administered to an anterior segment of the eye is provided at a halfway portion in a longitudinal direction of a base plate, wherein the base plate includes a bending portion that allows the base plate to bend in a direction opposite to a surface of the base plate on which the drug layer is provided, and by bending the base plate at the bending portion, at least a portion of a surface facing the base plate of the drug layer is exposed from the base plate.

An ophthalmic imaging system including an ocular lens and an optical coherence tomography (OCT) imaging module is provided. The OCT imaging module is able to image both retina and anterior segment of eyes by switching a lens group into and out of the OCT light path. The OCT imaging module includes a retina imaging mode and an anterior segment imaging mode. In the retina imaging mode, there exists an intermediate image plane located between the ocular lens and the OCT imaging module. From the retina imaging mode, anterior segment imaging is achieved by inserting a switching lens group into the optical path inside the OCT imaging module or replacing the whole OCT imaging module of the retina mode, wherein, after the insertion, there exist a new intermediate image plane located inside the OCT imaging module and a conjugate of the entrance pupil of the OCT imaging module located between the ocular lens and the OCT imaging module.

The embodiment of the invention provides an eye movement tracking method and device for anterior segment OCTA, equipment and a storage medium, and relates to the field of eye movement tracking. The method comprises the following steps: acquiring two continuous frames of pupil images; contour extraction is carried out on the two frames of pupil images, and two pupil contours are obtained; judging whether the two pupil contours are similar to a reference contour or not; and if so, calculating the central position offset of one pupil contour relative to the other pupil contour. According to the method and the device, the problems that the current OCTA is not suitable for all patients and the OCTA image is relatively inaccurate under the condition that the patient is poor in fixation of vision or frequently blinking or moving can be solved, and the effects of improving the suitability of the current OCTA and improving the accuracy of the OCTA image under the condition that the patient is poor in fixation of vision or frequently blinking or moving are achieved.

The invention discloses a full femtosecond laser system for eyeball spin correction. The full femtosecond laser system for eyeball spin correction comprises an eye anterior segment biological measurement unit, a spin control unit, a patient posture adjusting unit, a horizontal axial position marking unit, a negative pressure suction unit and a femtosecond laser unit, wherein the eye anterior segment biological measurement unit is used for collecting eyeball position information when a patient sits and sending the eyeball position information to the spin control unit; the spin control unit is used for collecting the eyeball position information of the patient in the supine position, comparing the eyeball position information of the patient in the supine position with the eyeball position information of the patient in the sitting position so as to obtain the eyeball spin information, and sending the eyeball spin information to the patient posture adjusting unit; the patient posture adjusting unit is used for adjusting the posture of the patient in the supine position according to the eyeball spin information, so that an absolute value of an eyeball spin angle is smaller than 1 degree; the horizontal axial position marking unit is used for completing horizontal axis marking of an operative eye in the sitting position according to a horizontal projection line; the negative pressuresuction unit is used for carrying out negative pressure suction and adjustment on the eyeball, so that a horizontal axis mark of the operative eye in the sitting position is parallel to a horizontalline of a cross mesh of an eyepiece; the femtosecond laser unit is used for carrying out femtosecond laser cutting. The full femtosecond laser system for eyeball spin correction solves the problem that an existing full femtosecond laser system fails to correct eyeball spin.

The present invention relates to an ophthalmic composition comprising pranoprofen and olopatadine and/or naphazoline. The invention also relates to a preparation method of the ophthalmic composition, which comprises the following steps: mixing the pranoprofen, the olopatadine and/or the naphazoline, the osmotic pressure regulator, the pH regulator, the metal ion chelating agent, the thickening agent, the preservative and the water for injection to obtain the ophthalmic composition. The invention also relates to an application of the ophthalmic composition in preparation of a medicine for treating ocular inflammation, and the ocular inflammation comprises external eye and/or anterior segment inflammation caused by gram-positive bacterium and/or gram-negative bacterium infection. When the ophthalmic composition provided by the invention is used as eye drops, the treatment effect on eye inflammation of a patient can be improved, and adverse effects of eye stimulation, conjunctival congestion, edema and the like after medication can be avoided, so that the medication compliance of the patient is improved, and the recovery time of the patient is shortened.

The invention discloses an OCT-based eye axis measurement method and device. The method comprises the following steps: performing self-inspection on an optical path of eye axis measurement by utilizing a reference position calibration method, so that a posterior segment optical path adjusting device is located at a reference position; and adjusting the eye axis measurement device to collect the OCT two-dimensional tomography results of the cornea and the retina to be measured at the same time, and then measuring the eye axis length of the eye to be measured according to the OCT two-dimensional tomography results of the cornea and the retina to be measured and the displacement of the posterior segment optical path adjusting device. The eye axis measurement device is used for implementing the eye axis measurement method, and OCT two-dimensional tomography is performed on the anterior segment and the posterior segment of the eye to be measured at the same time. According to the invention, the anterior segment and the posterior segment can be synchronously focused, synchronous and clear imaging of the anterior segment and the posterior segment can be further realized, and the reference position of the optical path of the sample arm can be quickly calibrated before each eye axis measurement by using a reference position calibration method, so that the accuracy of eye axis measurement can be improved.

The invention relates to an anterior segment morphology analysis method, wherein the data acquisition system used by the method comprises a monitoring module, a light splitting module, an eyepiece, anoptical coherence tomography module and a computer. A two-dimensional galvanometer non-contact optical scan is performed on a human eye to collect a three-dimensional data block of the anterior segment of the eye, and the method comprises the following steps of: acquiring the three-dimensional data block of the anterior segment, performing edge extraction on the data block, carrying out rough alignment and fine alignment, fitting, re-sampling and calculating a slope, and finally obtaining the tissue morphology analysis result of the anterior segment, including an anterior segment sectional image, a corneal anterior surface topographic map, a corneal posterior surface topographic map, a corneal thickness map, a crystalline anterior surface topographic map, a crystalline posterior surface topographic map, a crystalline thickness map, a corneal three-dimensional image, a chamber-angle three-dimensional image, an iris three-dimensional image, and a crystalline three-dimensional image. Byusing the method, the complexity of the algorithm is reduced, the measurement accuracy is ensured. The method is non-invasive, has no stimulation, and is easily accepted by patients.