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Inicio Archivos de la Sociedad Española de Oftalmología (English Edition) Decreased visual acuity from optic disc drusen
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Vol. 85. Issue 2.
Pages 64-69 (January 2010)
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Vol. 85. Issue 2.
Pages 64-69 (January 2010)
Decreased visual acuity from optic disc drusen
Pérdida de agudeza visual en drusas de papila
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260
P. Gili Manzanaroa,
Corresponding author
pgili@fhalcorcon.es

Author for correspondence.
, J. Yangüela Rodillaa, G. Rodríguez Caravacab, C. Carrasco Fonta, J.C. Martín Rodrigoa, A. Arias Puentea
a Ophthalmology Unit, University Hospital Foundation Alcorcón, Madrid, Spain
b Preventive Medicine Unit, University Hospital Foundation Alcorcón, Madrid, Spain
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Abstract
Purpose

To evaluate the visual acuity in patients with optic disc drusen and its relationship with the existence of superficial drusen.

Methods

For a six-year period (from 1997 to 2003), fifty-five patients (100 eyes) with optic disc drusen, confirmed with B- echography, were diagnosed. According to their ophthalmoscopic appearance under 20° retinography, the drusen were classified as hidden or visible. We evaluated the best corrected visual acuity. When the visual acuity was less than 0.8, other additional causes of visual impairment were studied.

Results

The average visual acute in patients with papillary drusen was 0.82 (maximum 1.2 and minimum 0.05). Lower visual acute was found in those patients with visible drusen. Visual acute was statistically worse (p=0.016) as the number of drusen increased. The visual acute was normal in 75 cases. The decreased visual acute was exclusively secondary to drusen in 5 cases. In the other 20 patients concomitant causes of visual impairment were found.

Conclusions

A decreased visual acute secondary to drusen is unusual. When present, it is usually moderate and associated with disturbances of the peripheral visual field. There is a significant relationship between the decrease in visual acute and the number of visible drusen. When the central vision is decreased, but not the visual field, other concomitant conditions that could also affect the vision, should be ruled out.

Keywords:
Optic disk drusen
Diagnostic imaging
Visual acuity
Perimetry
Ultrasonography
Ophthalmoscopy
Fundus photography
Resumen
Objetivo

Valorar la agudeza visual en los pacientes con drusas de papila y su relación con la presencia de drusas superficiales.

Métodos

Durante un periodo de estudio de 6 años (1997–2003) fueron diagnosticados de drusas de papila 55 pacientes (100 ojos), confirmados mediante ecografía B. Clasificamos las drusas según el aspecto oftalmoscópico (retinografía 20°) en drusas visibles y ocultas. Estudiamos la agudeza visual mejor corregida. Cuando existía una agudeza visual inferior a 0,8 se valoró si existían otras causas oculares de disminución visual.

Resultados

La agudeza visual media en los pacientes con drusas de papila fue de 0,82 (mínima de 0,05 y máxima de 1,2). Encontramos peor agudeza en los pacientes con drusas visibles, resultando significativamente peor cuanto más abundantes eran las drusas (p=0,016). La agudeza visual fue normal en el 75% de los casos y anormal solo por drusas en 5 casos; en 20 casos hubo otras causas asociadas de disminución visual.

Conclusiones

La disminución de la agudeza visual asociada a drusas es poco frecuente y cuando está presente suele ser moderada y casi siempre asociada a alteraciones del campo periférico. La agudeza visual muestra una relación significativa con la presencia y abundancia de drusas visibles. La pérdida de agudeza visual central sin afectación campimétrica debe hacernos sospechar otras causas asociadas.

Palabras clave:
Drusas de papila
Técnicas de imagen diagnóstica
Agudeza visual
Campimetría
Ecografía
Oftalmoscopia
Retinografía

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