title: LASIK for Myopic Astigmatism and Presbyopia Using Non-Linear Aspheric Micro-Monovision with the Carl Zeiss Meditec MEL 80 Platform.
abstract: OBJECTIVE
  to evaluate the monocular and binocular visual outcomes of LASIK with a non-linear aspheric micro-monovision protocol for the correction of myopic astigmatism and presbyopia.
  
  
  METHODS
  a retrospective, noncomparative case series included 310 eyes of 155 consecutive patients with myopic astigmatism and presbyopia who were treated with LASIK-induced micro-monovision. The Carl Zeiss Meditec CRS-Master software and MEL 80 excimer laser were used. The target refraction was plano for distance eyes (dominant eye) and between -0.75 and -2.00 diopters (D) for near eyes. Patients were followed for 1 year. Mean attempted spherical equivalent refraction (SE) correction was -3.59 ± 1.79 D (range: -0.20 to -8.31 D). Mean attempted cylinder correction was 0.84 ± 0.63 D (range: 0 to 2.50 D). Median patient age was 49 years (range: 43 to 63 years). Median follow-up was 12.5 months.
  
  
  RESULTS
  outcome measures after all treatments were as follows. Achieved SE correction was within ± 0.50 D in 92% and within ± 1.00 D in 99% of eyes. Monocular uncorrected distance visual acuity was 20/20 in 99% and 20/32 in 100% of distance eyes. Binocular uncorrected near visual acuity was J2 in 96% and J5 in 100% of patients. Binocular uncorrected visual acuity was 20/20 and J5 in 99% of patients. No eyes lost 2 or more lines of corrected distance visual acuity. There was no change in mesopic contrast sensitivity (CSV-1000) at all spatial frequencies. The average change in refraction between 3 months and 1 year was -0.0 6± 0.31 D.
  
  
  CONCLUSIONS
  this non-linear aspheric myopic micro-monovision protocol was well-tolerated, stable, and effective for treating patients with presbyopia in moderate to high myopic astigmatism.
authors.affiliation: London Vision Clinic, London, United Kingdom. dzr@londonvisionclinic.com
authors.forename: Dan Z
authors.initials: DZ
authors.lastname: Reinstein
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Archer
authors.forename: Marine
authors.initials: M
authors.lastname: Gobbe
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000503:physiopathology / Q000601:surgery*; D003315:Cornea / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000295:instrumentation / Q000379:methods*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D011305:Presbyopia / Q000503:physiopathology / Q000601:surgery*; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology