¿De qué colores es el vestido? Revisión de una ilusión óptica atípica / Which are the colors of the dress? Review of an atypical optic illusion

OBJETIVO: En 2015 la fotografía de un vestido se hizo viral. Un porcentaje amplio de la población veía el vestido blanco y dorado (ByD) en tanto que otra parte importante de la población lo veía azul y negro (AyN). El objetivo de este trabajo es revisar la bibliografía publicada en relación con este tema. MATERIAL Y MÉTODOS: Se realizó una búsqueda bibliográfica en Pubmed y Google. El algoritmo utilizado fue: (color OR colour) AND (dress OR #thedress). La búsqueda se limitó a los años 2015-2017. No se limitó la búsqueda a una lengua concreta. La bibliografía de los artículos localizados se utilizó de forma secundaria para ampliar la búsqueda. RESULTADOS: El algoritmo utilizado localizó un total de 23 artículos relacionados con el tema. La mayor parte de los trabajos han sido publicados en revistas del ámbito de la percepción y analizan la cuestión desde el punto de vista de la constancia cromática. Los factores genéticos parecen tener un bajo peso en el modo en el que la imagen es percibida. La potencial influencia de factores oculares ha sido poco estudiada. CONCLUSIÓN: Esta ilusión ha recibido poca atención por parte de las revistas del ámbito de la oftalmología. Aunque sin duda la constancia cromática está implicada, de momento no se ha elaborado una teoría capaz de explicar el carácter dicotómico de esta ilusión óptica

OBJECTIVE: In 2015 the picture of a dress went viral on social media. A significant proportion of the population saw it as golden and white (G&W), while another significant proportion saw it as blue and black (B&B). The aim of this article is to review the related literature. MATERIAL AND METHODS: Bibliographic search conducted in Pubmed and Google. The algorithm used was: (color OR colour) AND (dress OR #thedress). The search was limited to the years 2015-2017. No language restrictions were used. The references of the located articles were used to widen the search. RESULTS: The search algorithm retrieved 23 articles related to the topic. Most of the works have been published in journals in the field of perception. Most works address the topic from the point of view of chromatic constancy. Genetic factors seem to have a low weight in the way the dress is perceived. There are few studies on the potential influence of ocular factors. CONCLUSION: This illusion has gained little attention in ophthalmology journals. Although colour constancy is certainly involved, there is still no theory available to explain the dichotomous character of this optical illusion

Which are the colors of the dress? Review of an atypical optic illusion. / ¿De qué colores es el vestido? Revisión de una ilusión óptica atípica.

OBJECTIVE: In 2015 the picture of a dress went viral on social media. A significant proportion of the population saw it as golden and white (G&W), while another significant proportion saw it as blue and black (B&B). The aim of this article is to review the related literature. MATERIAL AND METHODS: Bibliographic search conducted in Pubmed and Google. The algorithm used was: (color OR colour) AND (dress OR #thedress). The search was limited to the years 2015-2017. No language restrictions were used. The references of the located articles were used to widen the search. RESULTS: The search algorithm retrieved 23 articles related to the topic. Most of the works have been published in journals in the field of perception. Most works address the topic from the point of view of chromatic constancy. Genetic factors seem to have a low weight in the way the dress is perceived. There are few studies on the potential influence of ocular factors. CONCLUSION: This illusion has gained little attention in ophthalmology journals. Although colour constancy is certainly involved, there is still no theory available to explain the dichotomous character of this optical illusion.

[Migraineous anterior optic ischemic neuropathy]. / Neuropatía óptica isquémica anterior migrañosa.

CASE REPORT: We report the case of a 22-year-old man who presented with headache and blurred vision which had started four days previous. A periventricular lesion was found in the magnetic resonance imaging. The patient was diagnosed with demyelinating neuritis and treated with intravenous methylprednisolone. DISCUSSION: After six months visual function had not improved, so the initial diagnosis was probably erroneous. It is likely that the patient suffered from migraineous optic ischemic neuropathy. In this paper we review the scarce literature about this topic, and the role of migraine as a cardiovascular risk factor.

Neuropatía óptica isquémica anterior migrañosa / Migraineous anterior optic ischemic neuropathy

Caso clínico: Se presenta el caso de un pacientevarón de 22 años de edad que acudió refiriendovisión borrosa y cefalea de cuatro días de evolución.Fue diagnosticado inicialmente de neuritis ópticadesmielinizante ante el hallazgo en la resonanciamagnética de una lesión periventricular, y tratadocon metilprednisolona intravenosa.Discusión: Ante la ausencia de mejoría de la funciónvisual tras seis meses de evolución, es probableque el diagnóstico inicial fuera erróneo y que elpaciente sufriera un cuadro de neuropatía ópticaisquémica anterior migrañosa. Se revisa la escasaliteratura publicada en relación con este tema y elpapel de la migraña como factor de riesgo cardiovascular(AU)

Case report: We report the case of a 22-year-oldman who presented with headache and blurredvision which had started four days previous. A periventricularlesion was found in the magnetic resonanceimaging. The patient was diagnosed withdemyelinating neuritis and treated with intravenousmethylprednisolone.Discusion: After six months visual function had notimproved, so the initial diagnosis was probably erroneous.It is likely that the patient suffered frommigraineous optic ischemic neuropathy. In this paperwe review the scarce literature about this topic, andthe role of migraine as a cardiovascular risk factor(AU)