Barros, Pedro, Liliana Paris, Joana Martins, and Paula Tenedorio. 2011. “A 53-Year-Old Woman With a Severe Headache, Bilateral Eye Pain, Blurred Vision, and Photophobia”. Digital Journal of Ophthalmology 17 (3). Boston, Massachusetts, USA:49-52. https://doi.org/10.5693/djo.03.2011.05.002.