title: Surgically induced astigmatism assessment: comparison between three corneal measuring devices.
abstract: OBJECTIVE
  To compare the findings of three corneal measuring devices for calculating surgically induced astigmatism (SIA) during cataract extraction.
  
  
  METHODS
  Patients' records were retrospectively reviewed to identify patients who had corneal astigmatism measurements before and at least 1 month after cataract surgery through 2.4-mm corneal incisions by all three tested devices (Lenstar LS900, Haag-Streit, Koeniz, Switzerland; IOLMaster 500, Carl Zeiss Meditec, Dublin, CA; and Atlas topographer, Carl Zeiss Meditec). Vector analysis was used to calculate the SIA for each measuring device.
  
  
  RESULTS
  Seventy eyes of 49 patients were included. All three measuring devices had similar SIA results: the median SIAs were 0.45 diopters (D) for the Lenstar, 0.41 D for the IOLMaster, and 0.47 D for the Atlas topographer (P = .884).
  
  
  CONCLUSIONS
  The three evaluated anterior corneal measuring devices produced similar results in measuring SIA. [J Refract Surg. 2015;31(4):244-247.].
authors.forename: Shay
authors.initials: S
authors.lastname: Ofir
authors.forename: Adi
authors.initials: A
authors.lastname: Abulafia
authors.forename: Guy
authors.initials: G
authors.lastname: Kleinmann
authors.forename: Olga
authors.initials: O
authors.lastname: Reitblat
authors.forename: Ehud I
authors.initials: EI
authors.lastname: Assia
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001251:Astigmatism / Q000175:diagnosis* / Q000209:etiology; D003315:Cornea / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects*; D012189:Retrospective Studies; D055815:Young Adult