title: Measurement of subfoveal choroidal thickness after cataract surgery in enhanced depth imaging optical coherence tomography.
abstract: OBJECTIVE
  To compare subfoveal choroidal thickness (SFCT) before and after uneventful cataract surgery using enhanced depth imaging optical coherence tomography (EDI-OCT).
  
  
  METHODS
  A prospective study was conducted on 115 eyes of 95 patients who had phacoemulsification. Measurements of SFCT were performed preoperatively, 1 day (D1), 7 days (D7), 1 month (M1), and 3 months (M3) after surgery using the EDI-OCT technique. Central retinal thickness (CRT) was measured before surgery and at M1 and M3.
  
  
  RESULTS
  The 95 patients had a mean age of 76 ± 8.3 years. The mean SFCT at baseline was 224 ± 75 μm. It showed a negative correlation with age and axial length (P = 0.03). The SFCT significantly increased after surgery with a mean value of 232 ± 76 μm at D1 (P < 0.001), 237 ± 78 μm at M1 (P < 0.001), and 232 ± 76 μm at M3 (P < 0.001). The mean CRT increased from 234 ± 48 μm at baseline to 248 ± 48 μm at M1 (P = 0.005), and 252 ± 81 μm at M3 (P = 0.001). Three (2.6%) patients developed a pseudophakic cystoid macular edema (PCME). The greatest progression of SFCT after phacoemulsification was observed for these patients. It preceded the occurrence of pseudophakic cystoid macular edema (PCME) by 1 month.
  
  
  CONCLUSIONS
  Mean SFCT increased after cataract surgery. The changes in baseline SFCT were greater in PCME patients and preceded the increase in CRT.
authors: Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris, France Department of Ophthalmology, Saint Roch University Hospital, Nice, France.
authors: Alexandra
authors: A
authors: Pierru
authors: Department of Anaesthesia, Saint Roch University Hospital, Nice, France.
authors: Michel
authors: M
authors: Carles
authors: Department of Ophthalmology, Saint Roch University Hospital, Nice, France.
authors: Pierre
authors: P
authors: Gastaud
authors: Department of Ophthalmology, Saint Roch University Hospital, Nice, France.
authors: Stéphanie
authors: S
authors: Baillif
mesh_terms: D000368:Aged; D002829:Choroid / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D005584:Fovea Centralis / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement; D008269:Macular Edema / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D018918:Phacoemulsification / Q000009:adverse effects*; D011183:Postoperative Complications; D011379:Prognosis; D011446:Prospective Studies; D013997:Time Factors; D041623:Tomography, Optical Coherence / Q000379:methods*
keywords: EDI-OCT; central retinal thickness; pseudophakic cystoid macular edema; subfoveal choroidal thickness