title: Changes of Accommodative Power in Vitrectomized Eyes with Crystalline Lenses.
abstract: OBJECTIVE
  To evaluate changes of accommodative power in phakic eyes after uneventful pars plana vitrectomy (PPV) in patients aged younger than 45 years without presbyopia.
  
  
  METHODS
  We investigated patients aged younger than 45 years who underwent PPV without crystalline lens extraction because of vitreoretinal disorders. Twelve weeks after vitrectomy, the near point of accommodation, high-frequency component of accommodative microfluctuation, axial length, and anterior chamber depth of vitrectomized and contralateral nonvitrectomized eyes were examined.
  
  
  RESULTS
  Ten eyes of 10 patients were included. The average patient age was 39.8 (±4.3) years. None experienced cataract progression in the vitrectomized eye up to 12 weeks after surgery. Near point of accommodation was significantly lower in the vitrectomized eye than in the opposite eye at 12 weeks after vitrectomy (5.23 [±1.39] diopters vs. 5.91 [±1.83] diopters, p < 0.001). The high-frequency components in the vitrectomized eyes were significantly greater than those in the contralateral eyes (p = 0.01). However, anterior chamber depth and axial length were similar in value to the preoperative observations.
  
  
  CONCLUSIONS
  Uneventful PPV in relatively young patients without presbyopia reduced accommodative power during the early postoperative period with no cataract progression.
authors.affiliation: *MD Department of Ophthalmology, Chungbuk National University College of Medicine, Cheongju, Korea (all authors).
authors.forename: Jae-Hyung
authors.initials: JH
authors.lastname: Kim
authors.forename: Tae Hwan
authors.initials: TH
authors.lastname: Moon
authors.forename: Ju Byung
authors.initials: JB
authors.lastname: Chae
authors.forename: Sungmin
authors.initials: S
authors.lastname: Hyung
mesh_terms: D000065:Accommodation, Ocular / Q000502:physiology*; D000328:Adult; D058450:Endotamponade; D005260:Female; D005466:Fluorocarbons / Q000008:administration & dosage; D006801:Humans; D007908:Lens, Crystalline / Q000502:physiology*; D008297:Male; D011446:Prospective Studies; D012163:Retinal Detachment / Q000503:physiopathology / Q000601:surgery; D014792:Visual Acuity; D014821:Vitrectomy; D057586:Vitreoretinal Surgery; D014823:Vitreous Hemorrhage / Q000503:physiopathology / Q000601:surgery
chemical_list: D005466:Fluorocarbons; C042852:perflutren