title: An instrument for ultrasonic biometry.
abstract: A simple instrument has been developed for measurement of axial length and anterior chamber depth. It is pocket sized, and the digital output is easy to interpret. The long term accuracy of 0.2 mm is ideal in helping to eliminate errors of lens selection.
mesh_terms: D000867:Anterior Chamber; D001699:Biometry / Q000295:instrumentation; D005123:Eye; D006801:Humans; D007908:Lens, Crystalline; D007909:Lenses; D019736:Prostheses and Implants; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation*