title: Immediate pars plana vitrectomy for dislocated intravitreal lens fragments during cataract surgery.
abstract: OBJECTIVE
  To assess the outcome of patients who underwent instantaneous pars plana vitrectomy for dislocated lens fragments during cataract surgery.
  
  
  METHODS
  The medical records of 29 patients who underwent immediate pars plana vitrectomy for dislocated lens fragments at the same sitting of phacoemulsification surgery were reviewed. Data including patients' demographics, preoperative and postoperative vision, risk factors for lens fragment dislocation, and intraoperative and postoperative complications were recorded.
  
  
  RESULTS
  The mean follow-up period of the patients was 12.3 months (range, 3-47 months). The median preoperative visual acuity was 6/90 (range, LP to 6/15). The median final postoperative visual acuity was 6/18 (range, NLP to 6/9) and the mean improvement in vision after the operation was 4.5 lines. The commonest risk factors for dislocation of lens fragment were late detection of posterior capsule tear, splitting of anterior capsulorrhexis, and hard nucleus. After excluding nine eyes with other pre-existing ocular comorbidities, 10 (50%) eyes had a final visual acuity of 6/12 or better. Complications after surgery included three (10%) cases of retinal detachment and one (3%) patient developed epiretinal membrane. None of the patients in the study developed secondary glaucoma or cystoid macular oedema following surgery.
  
  
  CONCLUSIONS
  Immediate vitrectomy in the same sitting of the cataract surgery is a surgical option in the management of dislocated intravitreal lens fragments when vitreoretinal support is available. Most patients achieve a good visual outcome with reduced risk of secondary glaucoma and cystoid macular oedema after surgery.
authors.affiliation: Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong Eye Hospital, Hong Kong, People's Republic of China.
authors.forename: T Y Y
authors.initials: TY
authors.lastname: Lai
authors.forename: A K H
authors.initials: AK
authors.lastname: Kwok
authors.forename: Y-S
authors.initials: YS
authors.lastname: Yeung
authors.forename: K Y W
authors.initials: KY
authors.lastname: Kwan
authors.forename: D C F
authors.initials: DC
authors.lastname: Woo
authors.forename: K S C
authors.initials: KS
authors.lastname: Yuen
authors.forename: A V P
authors.initials: AV
authors.lastname: Loo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007906:Lens Subluxation / Q000209:etiology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects*; D012163:Retinal Detachment / Q000209:etiology; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity; D014821:Vitrectomy / Q000009:adverse effects / Q000379:methods*