Macular hole: 10 and 20-MHz ultrasound and spectral-domain optical coherence tomography

Arquivos Brasileiros de Oftalmologia

Juliana Mantovani Bottós²  Virginia Laura Lucas Torres¹  Liliane Andrade Almeida Kanecadan²  Andrea Alejandra Gonzalez Martinez²  Nilva Simeren Bueno Moraes²  Mauricio Maia²  Norma Allemann² 

[1] ,Universidade Federal de São Paulo - UNIFESP Department of Ophthalmology São Paulo SP ,Brazil

关键词: Retinal perforations;    Tomography;    optical coherence;    Transducers;    Vitreous detachment;    Perfurações retinianas;    Tomografia de coerência óptica;    Transdutores;    Descolamento do vítreo;   

DOI  :  10.1590/S0004-27492012000600009

来源: SciELO

【 摘 要 】

PURPOSE: Optical coherence tomography (OCT) is valuable for macula evaluation. However, as this technique relies on light energy it cannot be performed in the presence of opaque media. In such cases, the ultrasound (US) may predict some macular features. The aim of this study was to characterize images obtained by ultrasound with 10 and 20-MHz transducers comparing to OCT, as well as to analyze the relationship between the vitreous and retina in eyes with macular hole (MH). METHODS: 29 eyes of 22 patients with biomicroscopic evidence of MH at different stages were included. All patients were evaluated using ultrasonography with 10 and 20-MHz transducers and OCT. RESULTS: OCT identified signs of MH in 25 of 29 eyes. The remaining 4 cases not identified by US were pseudoholes caused by epiretinal membranes. In MH stages I (2 eyes) and II (1 eye), both transducers were not useful to analyze the macular thickening, but suggestive findings as macular irregularity, operculum or partial posterior vitreous detachment (PVD) were highlighted. In stages III (14 eyes) and IV (5 eyes), both transducers identified the double hump irregularity and thickening. US could measure the macular thickness and other suggestive findings for MH: operculum, vitreomacular traction and partial or complete PVD. In cases of pseudoholes, US identified irregularities macular contour and a discrete depression. CONCLUSION: 10-MHz US was useful for an overall assessment of the vitreous body as well as its relationship to the retina. The 20-MHz transducer allowed valuable information on the vitreomacular interface and macular contour. OCT provides superior quality for fine morphological study of macular area, except in cases of opaque media. In these cases, and even if OCT is not available, the combined US study is able to provide a valid evaluation of the macular area improving therapeutic approach.

【 授权许可】

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