摘要:
Gemäss einem Aspekt der Erfindung wird ein Aesthesiometer zur Verfügung gestellt, das eine Prüfspitze (7) zum Ausüben einer Kraft auf die Augenvorderfläche des menschlichen Auges aufweist. Das Aesthesiometer weist eine Prüfspitzenführung (3, 5) zum Führen der Prüfspitze während der Kraftausübung aus. Es zeichnet sich dadurch aus, dass die Prüfspitzenführung eingerichtet ist, die Prüfspitze (7) durch eine Steuerung (32) angesteuert mit der Kraft als definierte elektromagnetisch erzeugte Kraft zu beaufschlagen.
摘要:
A system and method for providing the intraocular pressure (IOP) in the anterior chamber of an eye during ocular surgery is provided. Determination of IOP may be performed using an algorithm that is a function of the static (inflow) pressure and/or dynamic (outflow) pressure. Static (inflow) pressure may be calculated as a function of one or more parameters, including bottle height, wound leakage, sleeve size, length of irrigation tubing and/or inner diameter of the irrigation tubing. Dynamic (outflow) pressure may be calculated as a function of one or more parameters, including aspiration rate, vacuum rate, tip size, compliance of tubing, length of tubing, and/or inner diameter of tubing. Additional parameters may also be considered in the algorithm such as patient eye level.
摘要:
Several embodiments disclosed herein relate to the delivery of therapeutic nucleic acids to an ocular tissue in order to provide a therapeutic effect to reduce symptoms of or otherwise alleviate an ocular disorder. In particular embodiments, plasmid DNA is delivered to the cells of the trabecular meshwork in order to ameliorate increasing intraocular pressure. Devices and systems to accomplish this delivery are also disclosed.
摘要:
A system for measuring intraocular pressure in an eye of a patient includes a sensor configured to be positioned in the eye of the patient. The sensor includes a sealed cavity, and a flexible membrane sealing a distal end of the sealed cavity, the flexible membrane configured to deflect responsive to the intraocular pressure in the eye of the patient. The system includes a detection device configured to be positioned external to the eye of the patient and optically coupled to the sensor, the detection device configured to detect an indication of change in length of the sealed cavity resulting from deflection of the flexible membrane.
摘要:
The present invention describes a rectangular parabolic hood for blocking accomodation and reducing depth of focus to offset the negative affects of extraneous light and visual stimulus during examination of the pupil using ophthalmic instruments.
摘要:
Disclosed herein are methods and systems of evaluating test-retest precision using fractional rank precision or mean-average precision, comprising: a) collecting a test and a retest result of each subject, wherein the results are described in feature space(s) and collected from a vision test machine; b) selecting, a first test result of a first subject; c) calculating distances from the first test result to the retest result of each subject; d) assessing, a similarity between the first test result and the retest result of each subject by ranking the distances in a non-descending order; e) assessing a rank precision for the first subject based on a rank of a distance from the first test result to the retest result of the first subject; f) repeating b), c), d), and e) for each subject; and evaluating, the test-retest precision based on the rank precision for each of the plurality of subjects.
摘要:
Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.
摘要:
The present disclosure describes systems and method for generating surgical maps that provide a surgeon with information regarding the placement of features of interest. More particularly, the system is configured to display optical coherence tomography (OCT) images to a medical professional. The medical professional can select anatomical features, biomarkers, and other features of interest within each of the OCT images. The system can then translate the location of the features of interest within the OCT images to an en face image to generate a map of the features that the medical professional can use for surgical guidance.
摘要:
A holder device for holding a plurality of tonometer tips or the like during a disinfection procedure has a top wall, spaced rims extending downward from the top wall to engage a support surface and hold the top wall above the support surface, and handle portions extending upwards from the top wall. The top wall has a plurality of spaced holes of predetermined diameter each configured to hold a tip extending partially through the hole with a lower end of the tip spaced above a support surface. A cover plate is releasably secured between the handle portions at a location spaced above the top wall after loading the holes with tips, and holds the tips in the holes while at least a major portion of the device is submerged in a bath of disinfectant.
摘要:
An intraocular implant includes a sensor that, when implanted the eye, detects a physiological change (e.g., change in pupil diameter) associated with an accommodative trigger and emits a signal representing the detected change. A processor coupled to the implant senses and interprets the signal based on one or more thresholds representing the patient's pupillary response to changes in object distance and/or ambient light level. If the processor determines that the signal represents an accommodative trigger, it actuates an electro-active optical element, such as a pixelated liquid-crystal cell, to change the eye's effective optical power and/or depth of field.