title: [Comparison of anterior chamber depth measured by anterior segment optical coherence tomography and ultrasound biomicroscopy: a meta-analysis].
abstract: OBJECTIVE
  To compare the differences in the anterior chamber depth (ACD) measured by anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM).
  
  
  METHODS
  All studies pertaining to ACD measured by AS-OCT and UBM were collected from online databases. The assessment of methodological quality and data extraction from the included studies were performed independently by two reviewers for meta-analysis.
  
  
  RESULTS
  Eight studies involving 710 eyes were included in the analysis. The difference of ACD measurements between AS-OCT and UBM was not statistically significant in the overall patients included for analysis (SMD=0.19, 95%CI [0.00, 0.39]) or in the patients with primary angle-closed glaucoma (SMD=0.02, 95%CI[-0.04,0.19]).
  
  
  CONCLUSIONS
  The ACD measurements do not differ significantly between AS-OCT and UBM. Due to the relatively small number of the included studies and the patients involved, this conclusion needs further confirmation by high-quality studies involving larger sample sizes.
authors.affiliation: Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. E-mail: chenlinjiang605@qq.com.
authors.forename: Linjiang
authors.initials: L
authors.lastname: Chen
authors.forename: Ke
authors.initials: K
authors.lastname: Xiong
authors.forename: Jing
authors.initials: J
authors.lastname: Wu
mesh_terms: D000867:Anterior Chamber / Q000033:anatomy & histology*; D016206:Databases, Bibliographic; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000473:pathology*; D006801:Humans; D008297:Male; D033401:Microscopy, Acoustic / Q000379:methods*; D008875:Middle Aged; D041623:Tomography, Optical Coherence / Q000379:methods*