title: Intraocular pressure profiles during femtosecond laser-assisted cataract surgery.
abstract: OBJECTIVE
  To document the intraocular pressure (IOP) profiles during femtosecond laser-assisted cataract surgery.
  
  
  METHODS
  Refractive cataract surgery center.
  
  
  METHODS
  Prospective case series.
  
  
  METHODS
  Intraocular pressure was measured using a handheld portable applanation tonometer (Tono-Pen Avia) during femtosecond laser-assisted cataract surgery using the Victus platform.
  
  
  RESULTS
  Forty-one eyes of 35 patients were recruited. The mean age of the patients was 70.5 years ± 8.2 (SD) (range 51 to 85 years). The mean IOP before, during, and after suction was 17.2 ± 3.2 mm Hg (range 10 to 23 mm Hg), 42.1 ± 10.8 mm Hg (range 20 to 55 mm Hg), and 13.8 ± 3.4 mm Hg (range 9 to 25 mm Hg), respectively. The mean difference between IOP before and during suction was 25.0 ± 11.3 mm Hg (range 5 to 43 mm Hg) (P<.01, Wilcoxon signed-rank test). The mean difference between IOP during and after suction was -28.7 ± 10.8 mm Hg (range -45 to -10 mm Hg) (P<.01, Wilcoxon signed-rank test). The mean suction duration was 216 ± 15 seconds (range 180 to 245 seconds).
  
  
  CONCLUSIONS
  The increase in IOP during the suction phase of femtosecond laser-assisted cataract surgery was statistically significant compared with the baseline IOP. Caution should be taken in patients with ocular conditions that are vulnerable to IOP fluctuation.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: Nafees B
authors.initials: NB
authors.lastname: Baig
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: George P M
authors.initials: GP
authors.lastname: Cheng
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: Jasmine K M
authors.initials: JK
authors.lastname: Lam
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: Vishal
authors.initials: V
authors.lastname: Jhanji
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: Kelvin K L
authors.initials: KK
authors.lastname: Chong
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China.
authors.forename: Victor C P
authors.initials: VC
authors.lastname: Woo
authors.affiliation: From the Department of Ophthalmology & Visual Sciences (Baig, Lam, Jhanji, Chong, Tham), the Chinese University of Hong Kong, Hong Kong Eye Hospital (Baig, Lam, Tham), and Hong Kong Laser Eye Center (Cheng, Woo), Hong Kong, China. Electronic address: clemtham@cuhk.edu.hk.
authors.forename: Clement C Y
authors.initials: CC
authors.lastname: Tham
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002387:Cataract Extraction / Q000379:methods*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D053685:Laser Therapy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D014065:Tonometry, Ocular