摘要:
A fundus observation device comprises: an image forming part comprising a first image forming part and a second image forming part, the first image forming part forming a 2-dimensional surface image of fundus oculi of an eye through optical processing, the second image forming part optically scanning a surface region of the fundus oculi corresponding to at least a part of the 2-dimensional surface image to form a tomographic image of the fundus oculi; a controller configured to control the image forming part; and a storage configured to store control information including control instructions to be sent from the controller to the image forming part, when one of the 2-dimensional surface image and the tomographic image is formed. The controller, at the time of formation of new one of the 2-dimensional surface image and the tomographic image of the fundus oculi, instructs the image forming part to form the new one of the 2-dimensional surface image and the tomographic image based on the control information stored in the storage.
摘要:
Provided is an optical image measuring apparatus capable of easily changing a scanning interval of an object to be measured in a depth direction with high precision. The apparatus includes an interference optical system for superimposing signal light propagating through the object to be measured on reference light subjected to frequency shift to produce interference light, a reference mirror driving unit for driving a mirror to scan the object to be measured in the depth direction, shutters for sampling interference light beams, CCDs for storing charges for only a predetermined storage time and outputting electrical signals, a control unit for changing the storage time of the CCDs, a signal processing portion for calculating intensities and phases of interference light beams corresponding to each depth of the object to be measured which are successively detected by the CCDs during scanning based on the electrical signals successively outputted from the CCDs every changed storage time, and a setting operation unit for setting the storage time of the CCDs by an operator.
摘要:
To provide an optical image measuring apparatus capable of calculating an intensity of a direct current component composed of background light based on a result obtained by detection of interference light and obtaining a signal intensity of the interference light using the calculated intensity. The apparatus includes: an optical interference system to divide a light beam into signal light and reference light, and the signal light propagating through an object to be measured and the reference light are superimposed to produce interference light; beam splitters for dividing it into three interference light beams; shutters to perform sampling; photo detectors for detecting the sampled interference light beams and converting them into electrical signals; and a signal processing portion for calculating the signal intensity of the interference light and the spatial phase distribution thereof based on the electrical signals.
摘要:
The invention provides an optical image-measuring device that avoids long examination time and reduces some troublesome tasks. A fundus observation device 1 (optical image-measuring device) splits light that is output from a low-coherence light source 160 into a signal light LS directed toward the fundus oculi Ef and a reference light LR directed toward a reference mirror 174, and detects interference light LC that is generated by superimposing the signal light LS passing through the fundus oculi Ef and the reference light LR passing through the reference mirror 174 using a spectrometer 180 to form tomographic images of the fundus oculi Ef. Furthermore, the device comprises a reference mirror drive mechanism 243 shifting the reference mirror 174 toward the optical path direction of the reference light LR and a information storage part 225 storing the reference mirror 174 position information based on previous tomographic images. The controlling part 210 controls the reference mirror drive mechanism 243 so that the reference mirror 174 shifts into a position based on reference mirror position information related to the eye to be examined E that is stored in the information storage part 225.
摘要:
Highly reliable technology is provided with the capable of forming three-dimensional images of fundus oculi. The image forming part 220 of a computational control unit 200 forms images of the surface of fundus oculi Ef based on results of detecting fundus oculi catoptric light of light illuminated by a fundus camera unit 1A, in addition to forming tomographic images of the fundus oculi Ef based on results of detecting interference light LC from the OCT unit 150. The controlling part 210 synchronizes the timing of detecting fundus oculi catoptric light of light illuminated by the fundus camera unit 1A with the timing of detecting interference light LC from the OCT unit 150. The correction processing part 240 corrects the image positions of the tomographic images based on results of detecting interference light LC from the OCT unit 150 on the basis of two-dimensional images based on the results of detecting fundus oculi catoptric light of light illuminated from the fundus camera unit 1A. The image processing part 230 forms three-dimensional images of fundus oculi Ef based on tomographic images for which the image positions have been corrected.
摘要:
To provide a technology that makes it easy to capture a positional relation of a 2-dimensional image of the surface of a fundus oculi and a tomographic image of the fundus oculi. The fundus observation device 1 is provided with a fundus camera unit 1A for forming a 2-dimensional image of the surface of a fundus oculi Ef of an eye to be examined, an OCT unit 150 for forming a tomographic image of the fundus oculi Ef, a scanning unit 141 as well as an image processing part 220, a display 207, and a controlling part 210 of a computer 200 for displaying the 2-dimensional image formed by the fundus camera unit 1A and a tomographic image formed by the OCT unit, etc. in parallel on the display 207, and also for displaying the cross-sectional position information (attention line L, attention region P) indicating the cross-sectional position of the tomographic image on the surface of the fundus oculi Ef, so as to be overlapped with the 2-dimensional image.
摘要:
Materials and methods for treatment of pulmonary leakage are provided. A peptide comprising between about 7 amino acids and about 32 amino acids in a solution may be introduced to a target site. A hydrogel barrier may be provided at the target site in order to treat the pulmonary leakage.
摘要:
Materials and methods for treatment of pulmonary bulla are provided. A peptide comprising between about 7 amino acids and about 32 amino acids in a solution may be introduced to a target site. A hydrogel barrier may be provided at the target site in order to treat the pulmonary bulla.
摘要:
An optical image measurement device has: an interference-light generator configured to generate an interference light by splitting a low-coherence light into a signal light and a reference light and superimposing the signal light having passed through an eye and the reference light having passed through a reference object; a detector configured to detect the generated interference light; and a scanner configured to scan a projection position of the signal light on the eye, and the optical image measurement device is configured to form an image of the eye based on a result of detection by the detector. The optical image measurement device comprises a projector configured to project fixation information for fixing the eye onto a fundus oculi of the eye when the scanner scans with the signal light.
摘要:
Such an optical image measurement device is provided that is capable of acquiring a clear image even when the intensity of an interference light is low. A fundus oculi observation device 1 is configured to superimpose a signal light LS propagated through a fundus oculi Ef and a reference light LR propagated through a reference mirror 174 to generate an interference light LC, detect the interference light LC, and form an image of the fundus oculi Ef. The device 1 determines whether the intensity of a detection signal of the interference light LC is equal to or more than a predetermined threshold and, when determines that the intensity is less than the predetermined threshold, controls to increase the intensity of the detection signal of the interference light LC. The device 1 forms an image of the fundus oculi Ef based on the detection signal with the increased intensity.