title: Influence of laser posterior capsulotomy on anterior chamber depth, refraction, and intraocular pressure.
abstract: OBJECTIVE
  To evaluate the effect of neodymium:YAG (Nd:YAG) laser posterior capsulotomy on anterior chamber depth (ACD), intraocular pressure (IOP), and refraction, including spherical equivalent (SE) and various forms of astigmatism.
  
  
  METHODS
  Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan.
  
  
  METHODS
  Fifty-three eyes of 46 patients with posterior capsule opacification were included in this prospective study. An Nd:YAG laser was used to perform posterior capsulotomy. Patients' ACD, IOP, and refraction were measured before the capsulotomy and 30 minutes, 1 week, and 1 and 3 months after.
  
  
  RESULTS
  There were no statistically significant differences in ACD, IOP, or SE (P =.201, P =.465, and P =.109, respectively). However, there were significant decreases in the magnitudes of refractive astigmatism and residual astigmatism after laser treatment (P =.012 and P <.001, respectively).
  
  
  CONCLUSIONS
  Although an Nd:YAG laser posterior capsulotomy did not significantly change ACD, IOP, or SE, it decreased the magnitudes of refractive astigmatism and residual astigmatism 1 week postoperatively. These stabilized thereafter.
authors.affiliation: Department of Ophthalmology, Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan, People's Republic of China.
authors.forename: C Y
authors.initials: CY
authors.lastname: Hu
authors.forename: L C
authors.initials: LC
authors.lastname: Woung
authors.forename: M C
authors.initials: MC
authors.lastname: Wang
authors.forename: J H
authors.initials: JH
authors.lastname: Jian
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000033:anatomy & histology* / Q000502:physiology / Q000601:surgery; D002386:Cataract / Q000473:pathology*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D053685:Laser Therapy; D007903:Lens Capsule, Crystalline / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011379:Prognosis; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology*; D014792:Visual Acuity