Analysis of echoes from the rear eye wall with the aid of experimental and clinical research. II. Effect of the absorption of the lens and of amplification.
D000042:Absorption; D000669:Amplifiers, Electronic; D000818:Animals; D002386:Cataract / Q000503:physiopathology; D002417:Cattle; D006801:Humans; D007908:Lens, Crystalline / Q000502:physiology* / Q000503:physiopathology; D012160:Retina / Q000502:physiology; D013552:Swine; D014465:Ultrasonics / Q000295:instrumentation