title: [OCT measurement of the impact of Nd:YAG laser capsulotomy on foveal thickness].
abstract: BACKGROUND
  Posterior capsular opacification is the commonest complication of cataract surgery. It is treated with Nd:YAG laser capsulotomy. However, after treatment, cases of cystoid macular edema have been reported. The purpose of this study was to measure the foveal thickness change after Nd:YAG capsulotomy using optical coherence tomography (OCT) in order to clarify the physiopathology of this edema.
  
  
  METHODS
  A prospective, single-center study was conducted on patients who underwent Nd:YAG laser capsulotomy between May 2008 and November 2009. All patients received the same drug protocol after Nd:YAG capsulotomy (acetazolamide, apraclonidine, and rimexolone). Demographic parameters (age, sex, and medical history), clinical features (visual acuity, intraocular pressure) before and after Nd:YAG laser, and laser complications were analyzed. Central foveal thickness was measured by OCT (Stratus OCT 3, Zeiss). Data were collected before Nd:YAG laser capsulotomy and 1 week, 1 month, and 3 months after capsulotomy. The preoperative and postoperative thicknesses were compared. We used a Student t-test for statistical analysis.
  
  
  RESULTS
  Thirty eyes of 26 patients were analyzed. The mean foveal thickness was 209 ± 26 μm before capsulotomy, 213 ± 23 μm, 204 ± 19 μm, 213 ± 23 μm 1 week, 1 month, and 3 months, respectively, after capsulotomy. The foveal thickness did not significantly change during the first 3 months following laser treatment. No complications occurred.
  
  
  CONCLUSIONS
  Macular cystoid edema was a classical complication after Nd:YAG capsulotomy. However, there was no significant increase of macular thickness shortly after Nd:YAG capsulotomy in our study.
authors: Service d'ophtalmologie, hôpital Avicenne, université Paris XIII, 125, rue de Stalingrad, 93009 Bobigny cedex, France. audreygiocanti@yahoo.fr
authors: A
authors: A
authors: Giocanti-Aurégan
authors: J
authors: J
authors: Tilleul
authors: C
authors: C
authors: Rohart
authors: M
authors: M
authors: Touati-Lefloc'h
authors: T
authors: T
authors: Grenet
authors: F
authors: F
authors: Fajnkuchen
authors: G
authors: G
authors: Chaîne
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000453:epidemiology / Q000473:pathology / Q000534:rehabilitation; D002387:Cataract Extraction / Q000009:adverse effects* / Q000379:methods* / Q000534:rehabilitation / Q000706:statistics & numerical data; D005260:Female; D005584:Fovea Centralis / Q000473:pathology*; D006801:Humans; D053844:Lasers, Solid-State / Q000009:adverse effects* / Q000627:therapeutic use*; D007903:Lens Capsule, Crystalline / Q000473:pathology / Q000601:surgery*; D008269:Macular Edema / Q000453:epidemiology / Q000209:etiology; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D041623:Tomography, Optical Coherence / Q000379:methods; D014792:Visual Acuity