title: Preoperative cataract evaluation: intraocular lens power calculation.
mesh_terms: D001699:Biometry / Q000295:instrumentation / Q000379:methods; D002387:Cataract Extraction; D003315:Cornea / Q000033:anatomy & histology; D005123:Eye / Q000033:anatomy & histology; D006801:Humans; D007910:Lenses, Intraocular / Q000592:standards*; D008433:Mathematics; D011300:Preoperative Care; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis*; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography