June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Anterior Segment Optical Coherence Tomography in Healthy Older Adults from Parintins City: The Brazilian Amazon Region Eye Survey
Author Affiliations & Notes
  • Joao M Furtado
    Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo, Ribeirao Preto, Brazil
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Adriana Berezovsky
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Nivea Nunes Cavascan
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Sergio Munoz
    Departamento de Salud Publica, Universidad de La Frontera, Temuco, Chile
  • Marcos Jacob Cohen
    Instituto de Olhos de Manaus, Manaus, Brazil
  • Cristina Cunha
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Marcia Regina Kimie Higashi Mitsuhiro
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Jacob Moyses Cohen
    Instituto de Olhos de Manaus, Manaus, Brazil
    Departamento de Cirurgia, Setor de Oftalmologia, Universidade Federal do Amazonas, Manaus, Brazil
  • Rubens Belfort Jr
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Solange Rios Salomao
    Departamento de Oftalmologia e Ciencias Visuais, Universidade Federal de São Paulo, Sao Paulo, Brazil
  • Footnotes
    Commercial Relationships Joao Furtado, None; Adriana Berezovsky, None; Nivea Cavascan, None; Sergio Munoz, None; Marcos Cohen, None; Cristina Cunha, None; Marcia Mitsuhiro, None; Jacob Cohen, None; Rubens Belfort Jr, None; Solange Salomao, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 6206. doi:
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      Joao M Furtado, Adriana Berezovsky, Nivea Nunes Cavascan, Sergio Munoz, Marcos Jacob Cohen, Cristina Cunha, Marcia Regina Kimie Higashi Mitsuhiro, Jacob Moyses Cohen, Rubens Belfort Jr, Solange Rios Salomao; Anterior Segment Optical Coherence Tomography in Healthy Older Adults from Parintins City: The Brazilian Amazon Region Eye Survey. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):6206.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Purpose
 

To evaluate anterior chamber angle (ACA) and angle opening distance at Schwalbe’s line (AOD-SL) measured by anterior segment optical coherence tomography (AS-OCT) in healthy adults from Parintins, Brazilian Amazon Region.

 
Methods
 

The Brazilian Amazon Region Eye Study (BARES) is a population-based study on prevalence and causes of blindness in adults aged 45 and older from urban and rural areas of Parintins, Brazil. Out of the 1180 urban participants, 63 healthy subjects underwent AS-OCT horizontal scanning (iVue-100, Optovue, Inc) of the nasal and temporal anterior chamber angles of their right eyes. AOD-SL and ACA were assessed by three independent examiners. Their values were analyzed to investigate possible correlations between AOD-SL and ACA. Associations of these variables with gender, age, spherical equivalent (SE) and schooling were also studied.

 
Results
 

Mean nasal and temporal ACA were 29.83±10.320 and 27.77±9.670, respectively. Mean nasal and temporal AOD-SL were 454±187.29µm and 430.65±187.30µm, respectively. There was a good positive correlation between ACA and AOD-SL when measured nasally (r=0.75; p<0.01) and temporally (r=0.76; p<0.01). Nasal and temporal ACA were significantly (p=0.02; p<0.01) greater in males (35.30±8.680; 31.79±10.200) than in females (26.71±10.040, 25.23±8.510).<br /> Nasal and temporal AOD-SL were significantly (p<0.01; p<0.01) greater in males (579.41±216.24µm; 536.50±229.37µm) than in females (382.33±124.79µm; 365.51±118.17µm). There was no association between AOD-SL and ACA with age, schooling or SE.

 
Conclusions
 

A wider anterior chamber angle and angle opening distance by Schwalbe’s line in this population was found in males. These data will help to characterize a normative database for anterior chamber measurements to this population. Further studies with larger sample sizes including patients with prevalent eye conditions in that geographic area, such as cataract and pterygium, should be conducted.

 
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