Anatomical and functional impairment of the nerve fiber layer in patients with optic nerve head drusen.
Graefes Arch Clin Exp Ophthalmol
; 251(10): 2421-8, 2013 Oct.
Article
em En
| MEDLINE
| ID: mdl-23955723
ABSTRACT
OBJECTIVE:
To evaluate anatomical and functional impairment of the retinal nerve fiber layer (RNFL) using optical coherence tomography (OCT) and automated perimetry in patients with optic nerve head drusen (ONHD). MATERIALS ANDMETHODS:
Sixty-six eyes (66 patients) were studied with ONHD - confirmed by ultrasound B scan - and 70 eyes (70 subjects) of healthy control subjects. ONHD cases were categorised as visible or hidden. Average RNFL thickness and measurements in terms of the quadrants were analysed using both time-domain optical coherence tomography (TD-OCT) and spectral-domain optical coherence tomography (SD-OCT). Anatomical and visual field alteration of RNFL between visible and hidden ONHD and control groups were compared.RESULTS:
Average RNFL thickness in ONHD patients was 94 µm (TD-OCT) and 88 µm (SD-OCT), and in controls 107 µm (TD-OCT) and 96 µm (SD-OCT), with statistically significant differences between both OCTs. All quadrants analysed showed significant differences except the temporal quadrant. The differences were not significant between hidden drusen and controls.Visual field examination in ONHD showed alterations in 56 %. Alterations were greater in visible drusen in relation to non-visible drusen, but there were no significant differences.The association between RNFL defects in superior, inferior and temporal quadrants and visual field defects showed a statistical relation with visible ONHD, but not in hidden ONHD.CONCLUSIONS:
ONHD caused anatomical and functional damage of the RNFL, with a clear association between the alteration in ONHD and visual field defects in visible drusen cases.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Células Ganglionares da Retina
/
Transtornos da Visão
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Drusas do Disco Óptico
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Fibras Nervosas
Tipo de estudo:
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article