title: [Analysis of refractive status after cataract surgery in age-related cataract patients with shallow anterior chamber].
abstract: OBJECTIVE
  To evaluate the characteristics of postoperative refractive status in age-related cataract patients with shallow anterior chamber and the correlation between pre-operative anterior chamber depth and postoperative refractive status.
  
  
  METHODS
  Prospective case-control study. Sixty-eight cases (90 eyes) with age-related cataract were recruited from October 2010 to January 2012 in People's Hospital Peking University including 28 cases (34 eyes) in control group and 40 cases (56 eyes) in shallow anterior chamber group according to anterior chamber depth (ACD) measured by Pentacam system. Axial length and keratometer were measured by IOL Master and intraocular lens power was calculated using SRK/T formula. Postoperative refraction, ACD and comprehensive eye examination were performed at 1 month and 3 months after cataract surgery. Using SPSS13.0 software to establish a database, the two groups were compared with independent samples t-test and correlation analysis were performed with binary logical regression.
  
  
  RESULTS
  The postoperative refractive deviation at 1 month were (-0.39 ± 0.62) D in control group and (+0.73 ± 0.26) D in shallow anterior chamber group respectively which present statistical significance between the two groups (P = 0.00, t = 3.67); the postoperative refractive deviation in 3 month was (-0.37 ± 0.62) D in control group and (+0.79 ± 0.28) D in shallow anterior chamber group operatively which present statistical significance between the two groups (P = 0.00, t = 3.33). In shallow anterior chamber group, with the shallower of ACD, the greater of refractive deviation (P = 0.00, r1 month = -0.57, r3 months = -0.61).
  
  
  CONCLUSIONS
  Hyperopic shift existed in age-related cataract patients with shallow anterior chamber and the shallower of ACD was, the greater of hyperopic shift happened.
authors.affiliation: Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing Key Laboratory of Diagnosis and Therapy of R etinal and Choroid Diseases, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Yang
authors.affiliation: Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing Key Laboratory of Diagnosis and Therapy of R etinal and Choroid Diseases, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Xianru
authors.initials: X
authors.lastname: Hou
authors.affiliation: Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing Key Laboratory of Diagnosis and Therapy of R etinal and Choroid Diseases, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Huijuan
authors.initials: H
authors.lastname: Wu
authors.affiliation: Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing Key Laboratory of Diagnosis and Therapy of R etinal and Choroid Diseases, People's Hospital, Peking University, Beijing 100044, China. Email: drbaoyz@sina.com.
authors.forename: Yongzhen
authors.initials: Y
authors.lastname: Bao
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology; D058442:Capsule Opacification; D016022:Case-Control Studies; D002386:Cataract / Q000503:physiopathology*; D002387:Cataract Extraction; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012029:Refraction, Ocular; D054140:Refractive Surgical Procedures