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Anales de la Sociedad Mexicana de Oftalmología y Archivos de la Asociación Para Evitar la Ceguera en México

2008, Number 5

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Rev Mex Oftalmol 2008; 82 (5)

Análisis de la capa de fibras nerviosas posterior a fotocoagulación en retinopatía diabética

Saucedo A, Levine A, Celis B, Ramirez A

Language: Spanish
References: 26
Page: 284-291
PDF size: 244.53 Kb.


ABSTRACT

Purpose: To determine by Optic Coherence Tomography (OCT) if there are changes in the nerve fiber layers in diabetic retinopathy after photocoagulation.
Patients and methods: This is a prospective, longitudinal, comparative and observational study. Patients with diabetic retinopathy were included. We divided patients into two groups: Group 1 included patients without treatment and Group 2 included patients who have been photocoagulated. Both groups underwent photocoagulation and nerve fiber layer thickness analysis was done before and 4 to 6 weeks after treatment.
Results: We included 33 eyes. Mean age was 56 years old. In fifty percent of cases in Group 1 and 56.25% in Group 2 peripapilar nerve fiber layer thickness were decreased in the temporal and inferior area. More changes were seen in Group 1: a diminution in the superior, nasal, inferior and temporal area (mean 39.5 microns) compared with 26.25 in Group 2 (p›0.05). Minimal changes were observed in mean macular nerve fiber layer thickness.
Conclusions: Nerve fiber layer thickness may change after photocoagulation, producing damage in the internal layer of the retina and not only in the outer ones.


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