title: An inexpensive ultrasonic device for intraocular lens power determination.
abstract: The Echo-oculometer is a relatively inexpensive ultrasonic device for measuring anterior chamber depth and axial length prior to lens implantation. It is uncomplicated, easy to use and functioned very well in this limited study, giving an average error of 0.98 D when preoperative measurements were compared to postoperative refraction.
mesh_terms: D000867:Anterior Chamber / Q000033:anatomy & histology*; D006801:Humans; D007910:Lenses, Intraocular; D009885:Ophthalmology / Q000295:instrumentation; D014465:Ultrasonics / Q000295:instrumentation*