title: Ocular biometric characteristics of acute and chronic primary angle-closure glaucoma in Chinese patients.
abstract: OBJECTIVE
  To compare the ocular parameters of acute angle closure glaucoma (AACG) and chronic angle closure glaucoma (CACG).
  
  
  METHODS
  Totally 106 patients with primary angle closure glaucoma were recruited: 58 patients with AACG and 48 with CACG. All patients were divided into 3 groups: AACG attack eyes group, AACG uninvolved fellow eyes group and CACG group and underwent the same ophthalmic examinations, comprising optometry, keratometry, and A-scan ultrasonography. The lens/axial length factor (LAF) and relative lens position (RLP) were calculated.
  
  
  RESULTS
  The AACG attack eyes had a significant shallow anterior chamber depth, thick lens, short axial length and larger LAF. There tended to be a reduction in the percentage of LAF>0.20 in AACG attack eyes, CACG eyes and AACG uninvolved fellow eyes, though there were no statistically significant difference in all groups (P>0.05).
  
  
  CONCLUSIONS
  The eyes with AACG attack have a more crowded anterior chamber structure compared with uninvolved fellow eyes and eyes with CACG.
authors.affiliation: Department of Ophthalmology, Second Xiangya Hospital, Central South University, Changsha 410011; Department of Ophthalmology, Hunan Hospital of Traditional Chinese Medicine, Zhuzhou Hunan 412008, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.forename: Bing
authors.initials: B
authors.lastname: Jiang
mesh_terms: D000208:Acute Disease; D000867:Anterior Chamber / Q000473:pathology*; D001699:Biometry; D002908:Chronic Disease; D015812:Glaucoma, Angle-Closure / Q000145:classification / Q000473:pathology*; D006801:Humans; D007908:Lens, Crystalline