title: Cystotome-assisted prechop technique.
abstract: We describe a manual prechop technique to divide the nucleus using a cystotome. In the cystotome-assisted prechop technique, after the capsulorhexis, the surgeon-bent cystotome is inserted into the lens while the Nagahara chopper is set around the lens equator. The cystotome and the chopper are then brought together in the center to create a bisecting crack in the nucleus, dividing it cleanly into 2 hemispheres.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Chen
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China. Electronic address: 2590588576@qq.com.
authors.forename: Baosong
authors.initials: B
authors.lastname: Liu
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xiao
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Qi
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Hao
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.affiliation: From the Department of Ophthalmology (Chen), Zhongshan Hospital of Fudan University, Shanghai, the Cataract Service (Liu), Wuhan Eyegood Ophthalmic Hospital, Wuhan, the Department of Ophthalmology (Xiao), Beijing Chaoyang Hospital Affiliate of Capital Medical University, Beijing, the Department of Ophthalmology (Qi), Zhuhai Campus Guangdong Hospital of Traditional Chinese Medicine, Zuhai, the Department of Ophthalmology (Hao), Shanghai Punan Hospital, Shanghai, the Department of Ophthalmology (Shi), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, and the Department of Ophthalmology (Wu), Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Lianqun
authors.initials: L
authors.lastname: Wu
mesh_terms: D019923:Capsulorhexis / Q000295:instrumentation / Q000379:methods*; D002386:Cataract; D006801:Humans; D007907:Lens Nucleus, Crystalline / Q000601:surgery*; D018918:Phacoemulsification / Q000295:instrumentation*