title: Intraocular pressure during femtosecond laser pretreatment of cataract.
abstract: OBJECTIVE
  To analyze the course of intraocular pressure (IOP) during femtosecond laser pretreatment to cataract surgery.
  
  
  METHODS
  Launceston Eye Institute, Tasmania, Australia.
  
  
  METHODS
  Interventional prospective study.
  
  
  METHODS
  Femtosecond laser pretreatment was performed using the Catalys Precision Laser System with Liquid Optics Interface. The IOP was measured using a rebound tonometer (iCare PRO) during different stages of surgery and analyzed by number of docking attempts, vacuum time, treatment time, and central corneal thickness (CCT).
  
  
  RESULTS
  The mean baseline IOP in the 25 eyes was 17.5 mm Hg ± 2.4 (SD). During vacuum application, the mean IOP rise was 11.4 ± 3.3 mm Hg. Peak IOPs were recorded immediately after laser capsulotomy and lens fragmentation (mean 36.0 ± 4.4 mm Hg; mean increase from baseline 18.5 ± 4.7 mm Hg) and remained above baseline 2 minutes after the procedure (26.6 ± 4.0 mm Hg) (P<.001). Multiple regression analysis found no association between IOP rise and number of docking attempts, vacuum time, treatment time, or CCT.
  
  
  CONCLUSIONS
  Femtosecond laser pretreatment was associated with a mean peak increase in IOP of 18.5 mm Hg from baseline and appeared to be safe and well tolerated.
authors: Launceston Eye Institute, Launceston, Tasmania, Australia. nathan.kerr@me.com
authors: Nathan M
authors: NM
authors: Kerr
authors: Robin G
authors: RG
authors: Abell
authors: Brendan J
authors: BJ
authors: Vote
authors: Tze 'Yo
authors: T'
authors: Toh
mesh_terms: D000368:Aged; D002386:Cataract / Q000534:rehabilitation*; D003315:Cornea / Q000601:surgery*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D054018:Lasers, Excimer; D019654:Lens Implantation, Intraocular; D008297:Male; D018918:Phacoemulsification; D011446:Prospective Studies; D014065:Tonometry, Ocular