High-frequency ultrasound point-of-care device to quantify myopia-induced microstructural changes in the anterior sclera. 2023

Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
Department of Radiology, Weill Cornell Medicine, New York, New York, USA.

To develop a point-of-care (POC) device using high-frequency ultrasound (US) for evaluating microstructural changes in the anterior sclera associated with myopia. The proposed POC device must satisfy four primary requirements for effective clinical use: the measurement component is handheld; the software must be simple and provide real-time feedback; patient safety and health data security requirements set forth by relevant governing bodies must be satisfied and the measurement data must have sufficient signal-to-noise ratio (SNR) and repeatability. Radiofrequency (RF) echo data acquired by the POC device will be processed using our quantitative US methods to characterise tissue microstructure and biomechanical properties. All stated requirements have been met in the developed POC device. The high-frequency transducer is housed in a custom, 3D-printed, pen-like holder that allows for easy measurements of the anterior sclera. Custom software provides a simple interface for data acquisition, real-time data display and secure data storage. Exposimetry measurements of the US pressure field indicate device compliance with United States Food and Drug Administration limits for ophthalmic US. In vivo measurements on a volunteer suggest the RF data SNR and acquisition consistency are suitable for quantitative analysis. A fully functioning POC device using high-frequency US has been created for evaluating the microstructure of the anterior sclera. Planned studies using the POC device to scan the eyes of myopia patients will help clarify how the anterior sclera microstructure may be affected by myopia. If effective, this portable, inexpensive and user-friendly system could be an important part of routine eye examinations.

UI MeSH Term Description Entries
D009216 Myopia A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness. Nearsightedness,Myopias,Nearsightednesses
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012590 Sclera The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the CANAL OF SCHLEMM. (From Cline et al., Dictionary of Visual Science, 4th ed) Scleral Spur,Scleral Spurs,Scleras
D019095 Point-of-Care Systems Laboratory and other services provided to patients at the bedside. These include diagnostic and laboratory testing using automated information entry. Bedside Computing,Point of Care Technology,Bedside Technology,Point-of-Care,Bedside Technologies,Computing, Bedside,Point of Care,Point of Care Systems,Point-of-Care System,Systems, Point-of-Care,Technologies, Bedside,Technology, Bedside

Related Publications

Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
January 1980, Vestnik oftalmologii,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
September 2001, Investigative ophthalmology & visual science,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
January 1974, Vestnik oftalmologii,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
August 2009, Molecular vision,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
March 2020, BMC ophthalmology,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
April 2020, Investigative ophthalmology & visual science,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
June 2014, Internal and emergency medicine,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
January 2017, Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
February 2022, Journal of clinical ultrasound : JCU,
Cameron Hoerig, and Quan V Hoang, and Johannes Aichele, and Stefan Catheline, and Jonathan Mamou
January 2012, Ophthalmology,
Copied contents to your clipboard!