title: Analysis of 24-hour monitoring of intraocular pressure in 1055 eyes.
abstract: OBJECTIVE
  To investigate the clinical significance of 24-hour monitoring of intraocular pressure (IOP).
  
  
  METHODS
  A total of 571 cases (1055 eyes) undergoing 24-hour monitoring of IOP in the Second People's Hospital of Zhengzhou between June 2012 and March 2013 were retrospectively analyzed.
  
  
  RESULTS
  Among all 1055 eyes, 298 had suspected glaucoma (28.2%); 390 (37.0%) were diagnosed with glaucoma but received no treatment (312 with primary open angle glaucoma (POAG) and 78 with primary angle closure glaucoma (PACG)); 215 (20.4%) were diagnosed with glaucoma and received medical treatment; 132 (12.5%) underwent glaucoma filtration surgery; and there were 20 others. Through 24-hour IOP monitoring, 104 among 298 cases with suspected glaucoma were diagnosed with normal tension glaucoma (NTG), 110 with POAG, and 28 with the secondary glaucoma. Condition assessment and treatment plans were presented for 390 glaucoma cases receiving no treatment. Adjustment was made in the medical treatment of 138 eyes. Following glaucoma filtration surgery, 52 eyes received clinical advice on subsequent treatment.
  
  
  CONCLUSIONS
  The simplified 24-hour IOP monitoring method is readily accepted by patients, which is of great significance for providing guidance on the diagnosis of glaucoma and the assessment of the efficacy of glaucoma surgery. However, one-time 24-hour IOP monitoring is not sufficiently efficacious to make a definite diagnosis of NTG. Therefore, long-term follow-up and repeated 24-hour IOP monitoring are required to diagnose NTG, along with a variety of related examinations.
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China. 31390805@qq.com
authors.forename: Bo
authors.initials: B
authors.lastname: Wang
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Dai
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China.
authors.forename: Chuanwen
authors.initials: C
authors.lastname: Gao
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Liu
authors.affiliation: The Second People's Hospital of Zhengzhou, Zhengzhou 450007, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D018463:Filtering Surgery; D015812:Glaucoma, Angle-Closure / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D005902:Glaucoma, Open-Angle / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D057066:Low Tension Glaucoma / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000379:methods; D012189:Retrospective Studies; D013997:Time Factors; D014065:Tonometry, Ocular