title: [Clinical results of 300 cases of hard nuclear cataract operated by the ultrasonic aspiration method].
mesh_terms: D000328:Adult; D000368:Aged; D002387:Cataract Extraction / Q000009:adverse effects; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D011183:Postoperative Complications; D012163:Retinal Detachment / Q000209:etiology; D014464:Ultrasonic Therapy; D014792:Visual Acuity