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Effect of panretinal photocoagulation on the peripapillary retinal nerve fiber layer in diabetic retinopathy patients

Zacharias, Leandro Cabral; Azevedo, Breno M.S.; Araujo, Rafael B. De; Ciongoli, Marina R.; Hatanaka, Marcelo; Preti, Rony C.; Monteiro, Mario Luiz Ribeiro

Clinics; v. 74 (2019); e1163

Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo 2019-11-27

Acceso en línea

  • Título:
    Effect of panretinal photocoagulation on the peripapillary retinal nerve fiber layer in diabetic retinopathy patients
  • Autor: Zacharias, Leandro Cabral; Azevedo, Breno M.S.; Araujo, Rafael B. De; Ciongoli, Marina R.; Hatanaka, Marcelo; Preti, Rony C.; Monteiro, Mario Luiz Ribeiro
  • Materias: Panretinal Photocoagulation; Peripapillary Retinal Nerve Fiber Layer; Scanning Laser Polarimetry; Diabetic Retinopathy; Optical Coherence Tomography
  • Es parte de: Clinics; v. 74 (2019); e1163
  • Descripción: OBJECTIVES: To determine the effect of panretinal photocoagulation (PRP) on the peripapillary retinal nerve fiber layer (RNFL) in nonglaucomatous 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. Peripapillary RNFL thickness was measured using scanning laser polarimetry (SLP) with variable corneal compensation (GDx VCC; by Carl Zeiss Meditec, Dublin, CA) and spectral-domain optical coherence tomography (OCT) (Heidelberg Spectralis, Carlsbad, USA) at baseline and 12 months after PRP was performed. 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 among all RNFL thickness parameters tested by GDx VCC software (p=0.952, 0.464 and 0.541 for temporal-superior-nasal-inferior-temporal (TSNIT) average, superior average, inferior average, respectively). The nerve fiber indicator (NFI) had a nonsignificant increase (p=0.354). The OCT results showed that the average RNFL thickness (360o measurement) decreased nonsignificantly from 97.2 mm to 96.0 mm at 1 year post-PRP (p=0.469). There was no significant difference when separately analyzing all the peripapillary sectors (nasal superior, temporal superior, temporal, temporal inferior, nasal inferior and nasal thickness). CONCLUSION: Our results suggest that PRP, as performed in our study, does not cause significant changes in peripapillary RNFL in diabetic PDR patients after one year of follow-up.
  • Títulos relacionados: https://www.revistas.usp.br/clinics/article/view/164442/157705; https://www.revistas.usp.br/clinics/article/view/164442/157706
  • Editor: Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo
  • Fecha de creación: 2019-11-27
  • Formato: Adobe PDF
  • Idioma: Inglés
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