Focused ultrasound in ophthalmology
Focused ultrasound in ophthalmology Ronald H Silverman1,2 1Department of Ophthalmology, Columbia University Medical Center, 2F.L. Lizzi
Low-loss usage method of eye transducer
MEMS ultrasonic transducers for safe, low-power and portable eye
However, these methods suffer from uncomfortable use, safety risks, limited reliability in strong light or dark environments, and infringed informational security. In this paper, we propose an ultrasound
MEMS ultrasonic transducers for safe, low-power and portable eye
Low-power pulse-echo ultrasound featuring biosafety is transmitted and received by microelectromechanical system (MEMS) ultrasonic transducers seamlessly integrated on glasses.
Focused ultrasound in ophthalmology
Focused, single-element, mechanically scanned transducers are most common in ophthalmology. Specially designed transducers have been used to generate
Low-Loss Unidirectional Acoustic Focusing Transducer in Thin-Film
In this work, we present gigahertz low-loss unidirectional acoustic focusing transducers in thin-film lithium niobate. The design follows the anisotropy of fundamental symmetric (S0) waves in X-cut
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We have presented the first implementation of a low-power (below 50mW), binocular, stand-alone, wireless, wearable eye tracker based on a novel
Common predictors of accuracy, precision and data loss
Behavior Research Methods manuscript No. (will be inserted by the editor) Common predictors of accuracy, precision and data loss in 12 eye-trac
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Compared to a high-frequency linear-array transducer, annular-array transducers are more suitable for the unique structure of the human eye tissue
Ocular Ultrasound in Clinical Practice: Diagnostic Applications
The closed-eye technique (Figure 1) is preferred in most clinical settings due to its safety and ease of use. In this approach, a liberal amount of ultrasound gel is applied over the closed
Development of a Low-Power Wearable Eye Tracker based on Hidden
We have presented the first implementation of a low-power (below 50mW), binocular, stand-alone, wireless, wearable eye tracker based on a novel optoelectronic sensing technology
Accurate and Robust Eye Tracking with Ultrasound: A Computational
In this work, we present the first ultrasound simulation platform for eye tracking based on acoustic full-wave propagation. This simulator takes into consideration various acoustic configurations, sensor
Ultrasound Applications in Ophthalmology: A Review
Ultrasound can micro-fragment the lens tissue, making cataract surgery less invasive, and performed in an outpatient basis worldwide.
Review Eye tracking algorithms, techniques, tools, and applications
Eye tracking systems use software algorithms for pupil detection, image processing, data filtering, and the recording of eye movement by means of a fixation point, fixation duration, and
The Unseen Eye: Mastering Transducer Placement for Ultimate
Loss of Bottom/Fish at Speed: If you lose readings at speed, the transducer is likely too high or experiencing too much turbulence. Lower it slightly (1/8″ at a time). Spray/Rooster Tail: If the
Ultrasonic Transducers Technical Notes
Angle beam transducers use the principles of refraction and mode conversion to produce refracted shear or longitudinal waves in the test material as shown in Figure 14.
Design of Low-Loss 1–3 Piezoelectric Composites for High-Power
The benefits of 1–3 piezocomposites are well-recognized for transducer imaging applications, taking advantages of the high electrome-chanical properties of piezoelectrics and low acoustic impedance
A review on visible-light eye-tracking methods based on a low-cost
This paper is the first of a two-part study aiming at building a low-cost visible-light eye tracker (ET) for people with amyotrophic lateral sclerosis (ALS). The whole study comprises several
A Comprehensive Framework for Eye Tracking: Methods, Tools
EEG-based eye tracking is a method that combines electroencephalography (EEG) with eye-tracking (ET) equipment to measure brain activity and eye movements at the same time.
Low-loss Floating Electrode Unidirectional Transducer for SAW Sensor
The floating electrode unidirectional transducers were proposed by Yamanouchi to obtain a directional unidirectional transducer by combining open and shorted metal bands in half
Accurate and Robust Eye Tracking with Ultrasound: A Computational
Abstract—This paper presents an ultrasound simulation plat-form to synthesize realistic ultrasound eye tracking data as a function of transducer/ system design, sensor noise, eye/ face occlusion, and
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A Review of UltraHigh Frequency Ultrasonic Transducers
Introduction section introduces different materials for UHF transducer and analysis their advantages and disadvantages. Material Selection of Ultrasound Generation section present various
MEMS ultrasonic transducers for safe, low-power and portable eye
In this paper, we propose an ultrasound-based portable approach for eye-blinking activity monitoring. Low-power pulse-echo ultrasound featuring biosafety is transmitted and received by...
Anuradha_Kar_final_version
Real time gaze and eye state tracking on automotive platforms is used in driver support systems to evaluate driver vigilance and drowsiness levels. These use eye tracking setups mounted on a car''s