title: Factors affecting visual acuity after cataract surgery in patients with retinitis pigmentosa.
abstract: OBJECTIVE
  To investigate the factors affecting visual acuity after cataract surgery in patients with retinitis pigmentosa (RP).
  
  
  METHODS
  Retrospective, observational study.
  
  
  METHODS
  We retrospectively reviewed the charts of a consecutive series of 40 patients with RP who underwent cataract surgery.
  
  
  METHODS
  The changes in preoperative and postoperative best-corrected visual acuity (BCVA) were measured. We investigated the relation between preoperative mean deviation (MD) value on the Humphrey Field Analyzer (HFA: the central 10-2 program; Humphrey Instruments, Inc, San Leandro, CA) and final BCVA. We also investigated the relationship between preoperative ellipsoid zone (EZ; also called the inner/outer segment junction) conditions and final BCVA. In addition, we showed the prevalence of macular complications and capsule complications.
  
  
  METHODS
  The BCVA, slit-lamp biomicroscopic analysis, visual field, and optical coherence tomography (OCT) were obtained.
  
  
  RESULTS
  The mean of the BCVA significantly improved after cataract surgery from 0.76 (range, -0.08 to 2.30) to 0.45 (range, -0.18 to 2.00) (P < 0.005). However, final BCVA did not improve in 30 eyes (53.6%). The preoperative MD value and the final BCVA were significantly correlated, and the final BCVA significantly improved in the less advanced RP group (MD was ≥-15 decibels [dB]). The final BCVA was significantly better in the group in which preoperative OCT showed a normal EZ than in the groups in which the EZ was abnormal or not visible. Posterior capsular opacification was observed in 47 eyes (83.9%), and 23 eyes (41.1%) underwent YAG laser capsulotomy within a mean follow-up time of 3 years.
  
  
  CONCLUSIONS
  Final BCVA in approximately half of the eyes improved after cataract surgery in patients with RP. The preoperative ophthalmic examinations that may reflect macular (or foveal) function, such as HFA 10-2 program and OCT, are important parameters to assess postoperative visual outcome.
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Noriko
authors.initials: N
authors.lastname: Yoshida
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. Electronic address: ymocl@pathol1.med.kyushu-u.ac.jp.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Ikeda
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Murakami
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Shunji
authors.initials: S
authors.lastname: Nakatake
authors.affiliation: Department of Ophthalmology, Akita University Graduate School of Medicine, Akita, Japan.
authors.forename: Kota
authors.initials: K
authors.lastname: Fujiwara
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Notomi
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Toshio
authors.initials: T
authors.lastname: Hisatomi
authors.affiliation: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Ishibashi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011184:Postoperative Period; D019591:Pseudophakia / Q000503:physiopathology*; D012174:Retinitis Pigmentosa / Q000175:diagnosis / Q000503:physiopathology*; D012189:Retrospective Studies; D012307:Risk Factors; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology*; D058609:Visual Field Tests