title: Does phacoemulsification under topical anesthesia affect retrobulbar blood flow?
abstract: OBJECTIVE
  To investigate with color Doppler imaging the effects of phacoemulsification surgery under topical anesthesia on retrobulbar vessels hemodynamics.
  
  
  METHODS
  In this prospective study, color Doppler imaging was used to measure the maximum (Vmax) and minimum flow velocity (Vmin) of the central retinal vein, and the Vmax and Vmin, pulsatility index and resistance index of the central retinal artery, nasal, and temporal posterior ciliary arteries, and ophthalmic artery blood flow before and 1 day after phacoemulsification surgery under topical anesthesia.
  
  
  RESULTS
  After phacoemulsification surgery under topical anesthesia, Vmin of the central retinal artery increased (p ≤ 0.05), whereas the other variables showed no significant change.
  
  
  CONCLUSIONS
  Phacoemulsification surgery under topical anesthesia has a minor effect on retrobulbar blood flow. Therefore topical anesthesia should be suitable for patients with ocular perfusion disorders (eg, glaucoma).
authors.affiliation: Department of Ophtalmology, Gaziantep University Medical School, Gaziantep, Turkey.
authors.forename: Oguzhan
authors.initials: O
authors.lastname: Saygili
authors.forename: Ahmet
authors.initials: A
authors.lastname: Mete
authors.forename: Alper
authors.initials: A
authors.lastname: Mete
authors.forename: Kivanc
authors.initials: K
authors.lastname: Gungor
authors.forename: Necdet
authors.initials: N
authors.lastname: Bekir
authors.forename: Metin
authors.initials: M
authors.lastname: Bayram
mesh_terms: D000287:Administration, Topical; D000368:Aged; D000772:Anesthesia, Local / Q000379:methods; D000779:Anesthetics, Local / Q000494:pharmacology*; D001783:Blood Flow Velocity; D019842:Ciliary Arteries / Q000000981:diagnostic imaging / Q000187:drug effects*; D005260:Female; D006801:Humans; D008012:Lidocaine / Q000494:pharmacology*; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging / Q000187:drug effects*; D018918:Phacoemulsification / Q000379:methods*; D011446:Prospective Studies; D012039:Regional Blood Flow / Q000187:drug effects; D012161:Retinal Artery / Q000000981:diagnostic imaging / Q000187:drug effects*; D018615:Ultrasonography, Doppler, Color / Q000379:methods
chemical_list: D000779:Anesthetics, Local; D008012:Lidocaine