title: Femtosecond laser cataract incision morphology and corneal higher-order aberration analysis.
abstract: OBJECTIVE
  Analysis of the femtosecond laser refractive lens surgery corneal incision configuration and corneal higher-order aberration (HOA) effect from the first postoperative day.
  
  
  METHODS
  High-resolution anterior segment optical coherence tomography was used to assess 20 eyes undergoing femtosecond laser refractive lens surgery with 2.2-mm minimal incision. The primary incision (tri-planar) actual length, cord length, surface angle, surface irregularity, and regional pachymetry values and the secondary incision (uni-planar) length, angle, surface irregularity, and pachymetry values were analyzed. Hartmann-Shack aberrometer was used to assess corneal HOAs to correlate the effect. Assessment was done preoperatively and 1 month postoperatively.
  
  
  RESULTS
  The actual length, cord length, and surface angle means for the primary incision in the first postoperative day and month were 1.50 ± 0.1 and 1.47 ± 0.2 mm (P = .5), 1.41 ± 0.1 and 1.42 ± 0.2 mm (P = .8), and 27° ± 4° and 23° ± 5° (P = .07), respectively. The length and surface angle for the secondary incision in the first postoperative day and month were 1.17 ± 0.01 and 1.04 ± 0.1 mm (P = .05) and 52° ± 3° and 42° ± 5° (P = .007). The regional pachymetry values for the primary and secondary incisions were significantly increased in the first postoperative day and then significantly decreased after 1 month. All irregularities occurred in the posterior surface (endothelium): 2 cases of posterior gap (first day) and 1 case of posterior retraction (first month). The HOAs had not significantly changed preoperatively and after 1 month.
  
  
  CONCLUSIONS
  The femtosecond laser refractive lens surgery incision is stable and does not significantly change the HOA.
authors.affiliation: Vissum Corporacion, Alicante, Spain. jlalio@vissum.com
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Alió
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Abdou
authors.forename: Felipe
authors.initials: F
authors.lastname: Soria
authors.forename: Jaime
authors.initials: J
authors.lastname: Javaloy
authors.forename: Roberto
authors.initials: R
authors.lastname: Fernández-Buenaga
authors.forename: Zoltán Z
authors.initials: ZZ
authors.lastname: Nagy
authors.forename: Tamás
authors.initials: T
authors.lastname: Filkorn
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002387:Cataract Extraction / Q000379:methods*; D003315:Cornea / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D057108:Corneal Wavefront Aberration / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015948:Keratoplasty, Penetrating / Q000009:adverse effects / Q000379:methods*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011446:Prospective Studies; D012029:Refraction, Ocular; D041623:Tomography, Optical Coherence / Q000379:methods; D014792:Visual Acuity