title: Outcomes of hyperopic LASIK with the NIDEK NAVEX platform centered on the visual axis or line of sight.
abstract: To report refractive outcomes of hyperopic LASIK with automated centration on the visual axis compared with centration on the line of sight (LOS).
  
  
  
  The NIDEK Advanced Vision Excimer Laser platform (NAVEX) was used to treat 181 hyperopic eyes with centration on the LOS (LOS group) and 64 hyperopic eyes with centration on the visual axis (visual axis group). The coordinates of the visual axis were digitally transferred to the excimer laser system based on the positional relationship between the LOS and the coaxially sighted corneal light reflex. All eyes were treated with a 6.5-mm optical zone and 9.0-mm transition zone. Three-month postoperative outcomes were retrospectively analyzed.
  
  
  
  The preoperative manifest refraction spherical equivalent (MRSE) was +2.57+/-1.26 diopters (D) (range: 0.13 to 5.63 D) in the visual axis group and +2.46+/-1.32 D (range: 0.38 to 5.63 D) in the LOS group. The postoperative MRSE was +0.29+/-0.70 D (range: -1.00 to 1.75 D) in the visual axis group and +0.19+/-0.57 D (range: -0.75 to 1.75 D) in the LOS group. Postoperatively, 81% (38/47) of eyes in the visual axis group and 64% (74/116) of eyes in the LOS group were +/-0.50 D. In the visual axis group, 91% (44/52) of eyes and 92% (102/109) of eyes in the LOS group maintained best spectacle-corrected visual acuity within one line compared with preoperatively.
  
  
  
  Initial experience with hyperopic LASIK centered on the visual axis indicated safe and predictable outcomes.
authors.affiliation: Augenklinik am Neumarkt, Köln, Germany. o.kermani@augenportal.de
authors.forename: Omid
authors.initials: O
authors.lastname: Kermani
authors.forename: Uwe
authors.initials: U
authors.lastname: Oberheide
authors.forename: Karl
authors.initials: K
authors.lastname: Schmiedt
authors.forename: Georg
authors.initials: G
authors.lastname: Gerten
authors.forename: Harkaran S
authors.initials: HS
authors.lastname: Bains
mesh_terms: D003315:Cornea / Q000033:anatomy & histology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000601:surgery*; D020731:Keratomileusis, Laser In Situ / Q000379:methods*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D011680:Pupil; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology