Resumo

PAREJA-ESTEBAN, J.; TEUS-GUEZALA, M.A.; DRAKE-CASANOVA, P.  e  DAPENA-SEVILLA, I.. Retinal nerve fiber layer changes after cataract surgery measured by OCT: A pilot study. Arch Soc Esp Oftalmol [online]. 2009, vol.84, n.6, pp.305-309. ISSN 0365-6691.

Purpose: To analyze changes in peripapillary retinal nerve fiber layer (RNFL) after cataract surgery. Methods: The average RFNL thickness of patients who underwent cataract surgery was measured using the optical coherence tomography (OCT) III Stratus^® before surgery, the day after and one month later. The data were analyzed using the SPSS 12.0 software. We used paired two tail student´s t test for comparisons. Results: The study group was composed by 74 eyes of 74 patients. The RNFL thickness average was 90.71 µm (SD: 19.93), 88.30 µm (SD: 20.59) and 97.45 µm (SD: 14.30), before cataract surgery (AVGT0), the day after surgery (AVGT1) and one month later (AVGT2) respectively. We did not find statistically significant difference between AVGT0 and AVGT1 (P=0.37); however, statistically significant difference between AVGT1 and AVGT2 (P= 0.002) as well as in the image signal quality between AVGT0 and AVGT2 (P= 0.0001). Conclusions: The RNFL average thickness measured by OCT III Stratus^® showed an increase one month after cataract surgery. This phenomenon is accompanied with an improvement in signal quality.

Palavras-chave : Optical Coherence Tomography; cataract surgery; optic nerve; follow-up studies; glaucoma.

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