title: Anterior Chamber Depth, Lens Thickness, and Related Measures in African American Females With Long Anterior Zonules: A Matched Study With Control for Refractive Error.
abstract: OBJECTIVE
  To investigate anterior chamber depth (ACD), lens thickness (LT), vitreous body length (VBL), and axial length (AL) in African American females with long anterior zonules (LAZ) while controlling for refractive error.
  
  
  METHODS
  The eyes of 50 African American females with LAZ were compared with 50 controls matched with age, race, sex, and refractive error. Central ACD, LT, VBL, and AL measurements were obtained in a masked manner using a-scan ultrasonography.
  
  
  RESULTS
  LAZ cases had a mean age±SD of 67.1±7.6 years (range, 52 to 85 y) and a mean refractive error of +1.85±1.41 D (-1.75 to +4.75 D). Parameters were similar for controls. Mean ACD for cases was 2.45±0.34 mm and 2.57±0.38 mm for controls. Mean LT for cases was 4.94±0.43 mm and 4.83±0.45 mm for controls. Mean VBL for cases was 15.00±0.72 mm and 15.17±0.76 mm for controls. Mean AL for cases was 22.39±0.82 mm and 22.57±0.76 mm for controls. Using multiple logistic regression to control for any residual differences in age and refractive error, no significant differences were present between LAZ eyes and control eyes relative to the a-scan variables (P>0.1).
  
  
  CONCLUSIONS
  When refractive error was controlled for, this group of African American females with LAZ did not exhibit clinically significant differences in ACD, LT, VBL, and AL as compared with controls.
authors.affiliation: *Department of Clinical Education, Illinois College of Optometry, Illinois Eye Institute Departments of †Epidemiology and Biostatistics ‡Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL.
authors.forename: Daniel K
authors.initials: DK
authors.lastname: Roberts
authors.forename: Bruce A
authors.initials: BA
authors.lastname: Teitelbaum
authors.forename: David D
authors.initials: DD
authors.lastname: Castells
authors.forename: Janis E
authors.initials: JE
authors.lastname: Winters
authors.forename: Jacob T
authors.initials: JT
authors.lastname: Wilensky
mesh_terms: D001741:Black or African American; D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology*; D058452:Axial Length, Eye / Q000473:pathology; D017889:Exfoliation Syndrome / Q000175:diagnosis; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000175:diagnosis; D005902:Glaucoma, Open-Angle / Q000175:diagnosis; D006068:Gonioscopy; D006801:Humans; D007429:Intraocular Pressure; D007908:Lens, Crystalline / Q000473:pathology*; D008022:Ligaments / Q000473:pathology*; D008875:Middle Aged; D012030:Refractive Errors / Q000628:therapy*; D014065:Tonometry, Ocular; D014822:Vitreous Body / Q000473:pathology
references.citation: Clin Exp Ophthalmol. 2012 Sep-Oct;40(7):764-6
references.pmid: 22394479
references.citation: Ophthalmic Surg Lasers Imaging. 2009 Mar-Apr;40(2):207-16
references.pmid: 19320317
references.citation: Am J Ophthalmol. 2003 Dec;136(6):1176-8
references.pmid: 14644241
references.citation: J Glaucoma. 2008 Aug;17(5):393-6
references.pmid: 18703950
references.citation: J Cataract Refract Surg. 2004 Dec;30(12):2462-3; author reply 2463
references.pmid: 15617897
references.citation: Br J Ophthalmol. 1981 Nov;65(11):760-1
references.pmid: 7326223
references.citation: Dan Med Bull. 1968 Oct;15(8):244-8
references.pmid: 5708592
references.citation: J Cataract Refract Surg. 2003 Nov;29(11):2229-31
references.pmid: 14670437
references.citation: Acta Ophthalmol (Copenh). 1976 Oct;54(5):641-53
references.pmid: 990015
references.citation: Optom Vis Sci. 2002 Nov;79(11):681-7
references.pmid: 12462536
references.citation: Invest Ophthalmol Vis Sci. 2005 Sep;46(9):3363-71
references.pmid: 16123441
references.citation: Ophthalmic Surg. 1984 Nov;15(11):911-7
references.pmid: 6514265
references.citation: J Glaucoma. 2013 Jun-Jul;22(5):393-7
references.pmid: 23722729
references.citation: J Glaucoma. 2005 Feb;14(1):57-63
references.pmid: 15650606
references.citation: J Cataract Refract Surg. 1993 Nov;19(6):721-4
references.pmid: 8271167
references.citation: Br J Ophthalmol. 1976 Apr;60(4):287-93
references.pmid: 1276118
references.citation: J Cataract Refract Surg. 1991 Mar;17(2):205-10
references.pmid: 2040978
references.citation: Int Ophthalmol. 2001;24(6):313-22
references.pmid: 14750568
references.citation: J Cataract Refract Surg. 1998 Mar;24(3):390-6
references.pmid: 9559477