July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of the optic disc topography in diabetic retinopathy patients
Author Affiliations & Notes
  • Breno Azevedo
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Rafael Barbosa de Araujo
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Marina Ciongoli
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Leonardo Provetti Cunha
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Rony Carlos Preti
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Marcelo Hatanaka
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Leandro C Zacharias
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Mario L R Monteiro
    Ophthalmology, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
  • Footnotes
    Commercial Relationships   Breno Azevedo, None; Rafael Barbosa de Araujo, None; Marina Ciongoli, None; Leonardo Cunha, None; Rony Preti, None; Marcelo Hatanaka, None; Leandro Zacharias, None; Mario Monteiro, None
  • Footnotes
    Support  This study was supported by a grant from the CNPq (National Council for Scientific and Technological Development).
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 1908. doi:
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      Breno Azevedo, Rafael Barbosa de Araujo, Marina Ciongoli, Leonardo Provetti Cunha, Rony Carlos Preti, Marcelo Hatanaka, Leandro C Zacharias, Mario L R Monteiro; Effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of the optic disc topography in diabetic retinopathy patients. Invest. Ophthalmol. Vis. Sci. 2018;59(9):1908.

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

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Abstract

Purpose : To determine the effect of panretinal photocoagulation (PRP) on optic disc topographic parameters in non-glaucomatous patients with proliferative diabetic retinopathy (PDR).

Methods : This is a prospective, single center, observational study. Thirty-eight eyes of 26 diabetic patients underwent PRP for proliferative diabetic retinopathy. Stereoscopic disc photographs and optic nerve head (ONH) parameters were evaluated using the Zeiss fundus camera and the confocal scanning laser ophthalmoscopy (HRT3), respectively, at baseline and 12 months after completion of PRP.

Results : Thirty-eight eyes of 26 patients (15 female) with a mean age of 53.7 years (range 26 to 74 years) were recruited. No significant difference was found between stereo photography determined mean horizontal and vertical cup to disc (C/D) ratio before and after PRP treatment (P=0.461 and 0.839, respectively). The global values of ONH parameters analyzed with the HRT3 showed no significant change from baseline to 12 months (disc area, cup area, rim area, cup volume, rim volume, C/D area ratio, linear C/D ratio, mean cup depth, maximum cup depth, cup shape measure, height variation contour, mean retinal nerve fiber layer thickness and cross-sectional area).

Conclusions : Our results suggest that PRP does not cause morphological optic disk changes in diabetic PDR patients after one year of follow-up.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

 

Retinography of the posterior pole exemplifying the type of laser photocoagulation pattern used in the study

Retinography of the posterior pole exemplifying the type of laser photocoagulation pattern used in the study

 

Example of a printout obtained from an eye using the Heidelberg Retinal Tomography 3, before laser treatment.

Example of a printout obtained from an eye using the Heidelberg Retinal Tomography 3, before laser treatment.

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