September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Correlation between functional and structural damages one year or more after a single episode of acute primary angle closure in Brazilians
Author Affiliations & Notes
  • Rafael Vidal Merula
    Federal Univ of Minas Gerais, Juiz de Fora, Minas Gerais, Brazil
  • Sebastiao Cronemberger
    Federal Univ of Minas Gerais, Juiz de Fora, Minas Gerais, Brazil
  • Erica A Borges
    Federal Univ of Minas Gerais, Juiz de Fora, Minas Gerais, Brazil
  • Nassin Calixto
    Federal Univ of Minas Gerais, Juiz de Fora, Minas Gerais, Brazil
  • Footnotes
    Commercial Relationships   Rafael Merula, None; Sebastiao Cronemberger, None; Erica Borges, None; Nassin Calixto, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 379. doi:
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      Rafael Vidal Merula, Sebastiao Cronemberger, Erica A Borges, Nassin Calixto; Correlation between functional and structural damages one year or more after a single episode of acute primary angle closure in Brazilians. Invest. Ophthalmol. Vis. Sci. 2016;57(12):379.

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

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Abstract

Purpose : To assess correlations between functional and structural changes one or more years after a single episode of APAC in Brazilians.

Methods : This is a cross-sectional comparative study. Subjects who had an APAC crisis at least one year ago seen at the Glaucoma Service of São Geraldo Hospital were qualified for the study. These patients were identified from January of 2013 to July of 2015 during regular medical visits. They were submitted to a clinical evaluation that included a complete ophthalmic examination, RNFL imaging using spectral-domain optical coherence tomography (SD-OCT), ultrasound biometric assessment, and automated perimetry by means of the Interzeag Octopus 1-2-3 (Haag-Streit AG, Koeniz, Switzerland). APAC eyes were compared with the healthy fellow eyes (no previous crisis) as controls.

Results : The mean interval period was 6.5 ± 5.8 years (1.1–23.5), and the mean IOP control time after the APAC crisis was 73.8 ± 94 hours (10-360). In APAC eyes, mean defect (MD) was correlated with peripapillary RNFL, global (G) (P = 0.003, r = -0.723), nasal superior (P = 0.001, r = -0.782), temporal superior (TS) (P < 0.001, r = -0.846), temporal (T) (P = 0.018, r = -0.621), temporal inferior (TI) (P = 0.001, r = -0.791); corrected loss variance was correlated with macular thickness, inner inferior (IF) (P = 0.032, r = -0.574) and inner temporal (P = 0.045, r = -0.542), vertical cup-to-disk ratio (CDR) was correlated with MD (P = 0.012, r = 0.651), peripapillary RNFL, G (P = 0.017, r = -0.623), TS (P = 0.012, r = -0.651), T (P = 0.011, r = -0.655), TI (P < 0.001, r = -0.836), and with macular, IF (P = 0.029, r = -0.581) and outer nasal (P = 0.029, r = -0.583).

Conclusions : In this paper we demonstrated correlations between VF defects and peripapillary/macular RNFL thicknesses; vertical CDR and visual field defects; vertical CDR and peripapillary/macular RNFL thicknesses in the affected APAC eyes. We also found positive correlations between vertical CDR and the interval between the APAC crisis and IOP control, as well as vertical CDR and the interval between the APAC crisis and examination.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

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