title: [Transient increase of intraocular pressure with primary open angle glaucoma patients associated with warm and cold seasons after long waiting time in an ophthalmology clinic].
abstract: OBJECTIVE
  To retrospectively evaluate the influence of long waiting time on intraocular pressure (IOP) with primary open angle glaucoma (POAG) patients in the waiting room of an ophthalmology clinic.
  
  
  METHODS
  We reviewed 74 consecutive patients with POAG who visited at Kaimeido Ophthalmic and Dental Clinic within the past 8 years without change of glaucoma medications, 34 men and 40 woman, average age +/- standard deviation) 67.9 +/- 13.4 years. Right eye data of all patients were enrolled and IOP was split into 4 groups, short waiting time (< 30 min ; SH30) and long waiting time (> or = 60 min; LH60) in the hot (> or = 15 degrees C) season. Short waiting time (SC30) and long waiting time (LC60) in the cold (< or = 5 degrees C) season; according to the average outdoor air temperature in Sapporo Japan. All groups were compared each other (paired t test).
  
  
  RESULTS
  There was a significant difference between SH30 (14.6 2.4 mmHg) and LH60 (14.9 +/- 2.4 mmHg; p = 0.038), between SC30 (14.6 +/- 2.4 mmHg) and LC60 (15.5 +/- 2.6 mmHg; p = 3.45 x 10(-7)) and between LH60 and LC60 (p = 0.00079). On the other hand, there was no significant difference between SH30 and SC30 (p = 0.89).
  
  
  CONCLUSIONS
  This retrospective study suggests that patients with POAG show a transient IOP elevation after longer waiting time, especially during the cold season.
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Nishino
authors.forename: Fujiko
authors.initials: F
authors.lastname: Yoshida
authors.forename: Akari
authors.initials: A
authors.lastname: Nitta
authors.forename: Mieko
authors.initials: M
authors.lastname: Saito
authors.forename: Kazuuchi
authors.initials: K
authors.lastname: Saito
mesh_terms: D000368:Aged; D000554:Ambulatory Care Facilities; D001071:Appointments and Schedules; D005260:Female; D005902:Glaucoma, Open-Angle / Q000503:physiopathology*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D012621:Seasons