Ultrasound Quantitative Evaluation of Human Eye Cataract

Abstract. A technique to improve an eye cataract early detection and quantitative evaluation of maturity using ultrasound was investigated. A broadband coherent signal, backscattered from an eye lens tissue, was digitized, recorded and processed. A new parameter – lens quality was proposed for the human eye cataract quantitative evaluation. Lens quality reflects two phenomena of ultrasound interaction with lens tissue – attenuation and scattering. Digital technique for echo-signal energy and time frequency analysis was applied, ultrasound waves scattering strength and spectral slope was calculated. Experimental statistical investigations performed with signals divided into five groups – mature cataract, immature form of cataract, incipience cataract phase, healthy lenses and human eye phantom. Investigations have showed that value of specific quality in the test groups vary in the wide range from 1 to 60. This feature allows theoretically differentiate eye lenses cataract in d...

• Type: Journal
• Year: 2007
• Where: INFORMATICALT
• Authors: Alvydas Paunksnis, Skaidra Kurapkiene, Audris Maciulis, Audris Kopustinskas, Marija-Liucija Paunksniene
• Keywords: Cataract, Cataract Early Detection, Eye Cataract, INFORMATICALT 2007