[Preliminary observation on therapeutic effect of couch-netting and cryoextraction of cataract].
D000368:Aged; D002387:Cataract Extraction / Q000379:methods*; D003452:Cryosurgery; D005260:Female; D006801:Humans; D007431:Intraoperative Complications; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications