title: Effects of phacoemulsification surgery on ocular hemodynamics.
abstract: OBJECTIVE
  To evaluate the possible effects of phacoemulsification cataract surgery on ocular hemodynamics.
  
  
  METHODS
  In this prospective study, intraocular pressure (IOP), pulsatile ocular blood flow (POBF), and ocular pulse amplitude (OPA) were measured pre-operatively (baseline) and at 1 week and 3 weeks postoperation in 52 eyes of 26 patients (mean age 63.15±10.25 years) scheduled for unilateral phacoemulsification cataract surgery with intraocular lens implantation. In all of the eyes, a blood flow analyzer (Paradigm DICON; Paradigm Medical Industries Inc.; USA) was used to obtain measurements of IOP, POBF, and OPA. The data obtained from operated eyes were compared statistically to untreated fellow phakic eyes of the patients.
  
  
  RESULTS
  For operated eyes, the mean baseline IOP, POBF, and OPA values were 15.9±4.64mmHg, 17.41±4.84µL/s, and 2.91±1.12mmHg, respectively. The IOP, POBF, and OPA values were 17.19±4.34mmHg, 17.56±6.46µL/s, and 3.12±1.1mmHg, respectively, in the nonoperated control eyes. Statistically significant differences from baseline measurements were not observed 1 week and 3 weeks postoperation for the operated or nonoperated eyes. There were also no statistically significant differences in any measurements between the operated and nonoperated eyes in all the examination periods (P>0.05 for all).
  
  
  CONCLUSIONS
  Uncomplicated phacoemulsification surgery does not affect ocular hemodynamics in normotensive eyes with cataracts.
authors.affiliation: Department of Ophthalmology, School of Medicine, Karadeniz Technical University, Trabzon 61080, Turkey.
authors.forename: Adem
authors.initials: A
authors.lastname: Turk
authors.forename: Suleyman
authors.initials: S
authors.lastname: Mollamehmetoglu
authors.forename: Halil Ibrahim
authors.initials: HI
authors.lastname: Imamoglu
authors.forename: Mehmet
authors.initials: M
authors.lastname: Kola
authors.forename: Hidayet
authors.initials: H
authors.lastname: Erdol
authors.forename: Nurettin
authors.initials: N
authors.lastname: Akyol
keywords: cataract; cataract extraction; intraocular pressure; phacoemulsification; regional blood flow