title: Effect of femtosecond laser-created clear corneal incision on corneal topography.
abstract: OBJECTIVE
  To evaluate changes in anterior corneal topography after femtosecond laser-created clear corneal incisions (CCIs).
  
  
  METHODS
  Fondazione G.B. Bietti IRCCS, Rome, Italy.
  
  
  METHODS
  Comparative case series.
  
  
  METHODS
  Phacoemulsification was performed through a 2.75 mm incision. In the study group, a 3-plane CCI was created using a 150 kHz femtosecond laser. In the control group, a single-plane angled CCI was created using disposable knives. Placido disk corneal topography was performed preoperatively and 1 week and 1 month postoperatively. Central curvature (simulated keratometry [K]) and local changes in anterior corneal topography at the CCI site were evaluated and compared between groups.
  
  
  RESULTS
  No significant changes in the mean simulated K values were found in either group postoperatively (P>.05). The preoperative to 1-month postoperative mean simulated K ranged between 43.30 diopters (D)±0.82 (SD) and 43.17±0.82 D in the study group and between 43.34±1.44 D and 43.29±1.48 D in the control group. The method of CCI creation significantly influenced the changes in the anterior central topography during the first month postoperatively (P<.001). Greater steepening of the incision edges was found in the control group (mean 36.60±4.13 D to 37.74±2.39 D) than in the study group (mean 38.81±2.91 D to 39.15±4.48 D).
  
  
  CONCLUSIONS
  The 2.75 mm 3-plane femtosecond CCIs induced slight changes in the anterior central corneal topography, similar to single-plane angled manual incisions. Topographic differences between the femtosecond method and manual method were found at the CCI site.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy. Electronic address: serrao@serraolaser.it.
authors.forename: Sebastiano
authors.initials: S
authors.lastname: Serrao
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Lombardo
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
authors.forename: Domenico
authors.initials: D
authors.lastname: Schiano-Lomoriello
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Ducoli
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
authors.forename: Marianna
authors.initials: M
authors.lastname: Rosati
authors.affiliation: From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Lombardo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003315:Cornea / Q000473:pathology*; D063171:Corneal Pachymetry; D019781:Corneal Topography; D005260:Female; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D012029:Refraction, Ocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology