title: Phacoemulsification of hard nucleus cataracts.
authors.forename: Ping
authors.initials: P
authors.lastname: Hou
authors.forename: Yi Jun
authors.initials: YJ
authors.lastname: Hu
mesh_terms: D002386:Cataract / Q000473:pathology*; D006801:Humans; D007907:Lens Nucleus, Crystalline / Q000473:pathology*; D018918:Phacoemulsification / Q000379:methods*