摘要:
An ophthalmic refractor is described that provides a non-linear relationship between spherical power and refractive error by positioning a reference plane for a sensor system of the refractor in front of the cornea. The refractor may have a working distance and dynamic range that enable it to be mounted on a surgical microscope. Also described are computational methods for analysing the output from the ophthalmic refractor, utilising error minimisation, linear regression and Fourier Transform analysis.
摘要:
An ophthalmic refractor is described that provides a non-linear relationship between spherical power and refractive error by positioning a reference plane for a sensor system of the refractor in front of the cornea. The refractor may have a working distance and dynamic range that enable it to be mounted on a surgical microscope. Also described are computational methods for analysing the output from the ophthalmic refractor, utilising error minimisation, linear regression and Fourier Transform analysis.
摘要:
The present invention is directed to a supplemental endo capsular lens (SECL) and the method of inserting and embedding the SECL within either a gel or polymer, inside the capsule of the crystalline lens, during phaco-ersatz or similar surgical procedures in order to supplement the refractive power of the eye with a view to (1) correcting ametropia while (2) maintaining a useable amplitude of accommodation.
摘要:
A method of thermally inducing and monitoring changes to localized regions of tissue illuminating a volume of tissue with a first beam of X-rays, detecting portions of the first beam that passed through the volume, generating a first image signal from the portions of the first beam detected, applying heat to at least a localized region of tissue within the volume after the illuminating and detecting, illuminating the volume with a second beam of X-rays, detecting portions of the second beam that passed through the volume during the illuminating with the second beam, generating a second image signal from the portions of the second beam detected, and generating a difference image signal based upon a comparison of the first and second image signals. The difference image signal provides information of changes in X-ray attenuation by localized regions of tissue within the volume due to the application of heat.
摘要:
A method of thermally inducing and monitoring changes to localized regions of tissue illuminating a volume of tissue with a first beam of X-rays, detecting the portions of the first beam of X-rays that passed through the volume of tissue, generating a first X-ray image signal from the portions of X10 rays of the first beam detected, applying heat to at least a localized region of tissue within the volume of tissue after the illuminating and after the detecting, illuminating the volume of tissue with a second beam of X-rays, detecting portions of the second beam of X-rays that passed through the volume of tissue during the illuminating with the second beam of X-rays, generating a second X-ray image signal from the portions of X-rays of the second beam detected, and generating a difference image signal based upon a comparison of the first and second X-ray image signals. The difference image signal provides information of changes in X-ray attenuation by localized regions of tissue within the volume of tissue due to the application of heat.
摘要:
A method of thermally inducing and monitoring changes to localized regions of tissue illuminating a volume of tissue with a first beam of X-rays, detecting portions of the first beam of X-rays, generating a first X-ray image signal from the detected X-rays of the first beam, applying heat to at least a localized region of tissue within the volume of tissue after the illuminating and after the detecting, illuminating the volume of tissue with a second beam of X-rays, detecting portions of the second beam of X-rays, generating a second X-ray image signal from the portions of X-rays of the second beam detected, and generating a difference image signal based upon a comparison of the first and second X-ray image signals. The difference image signal provides information of changes in X-ray attenuation by localized regions of tissue within the volume of tissue due to the application of heat.
摘要:
A small animal imaging system comprising a base element and a camera coupled to the base element, the camera being sized to image the eye of a small animal. A light-emitting diode is also included coupled to the base element. An OCT imaging apparatus is also included coupled to the base element. An X-Y scanner is also included coupled to the base element in communication with the OCT imaging apparatus.
摘要:
A method of thermally inducing and monitoring changes to localized regions of tissue by illuminating a volume of tissue with a first beam of X-rays, detecting portions of the first beam that passed through the volume, generating a first image signal from the portions of the first beam detected, applying heat to at least a localized region of tissue within the volume after the illuminating and detecting, illuminating the volume with a second beam of X-rays, detecting portions of the second beam that passed through the volume during the illuminating with the second beam, generating a second image signal from the portions of the second beam detected, and generating a difference image signal based upon a comparison of the first and second image signals. The difference image signal provides information of changes in X-ray attenuation by localized regions of tissue within the volume due to the application of heat.
摘要:
A method of thermally inducing and monitoring changes to localized regions of tissue illuminating a volume of tissue with a first beam of X-rays, detecting the portions of the first beam of X-rays that passed through the volume of tissue, generating a first X-ray image signal from the portions of X10 rays of the first beam detected, applying heat to at least a localized region of tissue within the volume of tissue after the illuminating and after the detecting, illuminating the volume of tissue with a second beam of X-rays, detecting portions of the second beam of X-rays that passed through the volume of tissue during the illuminating with the second beam of X-rays, generating a second X-ray image signal from the portions of X-rays of the second beam detected, and generating a difference image signal based upon a comparison of the first and second X-ray image signals. The difference image signal provides information of changes in X-ray attenuation by localized regions of tissue within the volume of tissue due to the application of heat.
摘要:
A microprobe useful for assessing auditory function by enabling clinical and intraoperative measurements of blood flow, particularly cochlear blood flow and neural compound action potentials, particularly of the auditory nerve (cranial nerve VIII) is disclosed. In addition, a monitoring system containing this microprobe and a method of using the microprobe are described.