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Functional impairment with minimal macular damage in femtosecond laser plasma injury : case report: [ Comprometimento funcional com dano macular mínimo em lesão com plasma de laser de femtosegundo: relato de caso ]
University of Minho, Portugal ; Hospital de Braga, Portugal.
Hospital Santa Maria Maior de Barcelos, Portugal.
Hospital de Braga, Portugal.
University of Minho, Portugal.
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2013 (English)In: Arquivos Brasileiros de Oftalmologia, ISSN 0004-2749, E-ISSN 1678-2925, Vol. 76, no 5, 317-319 p.Article in journal (Refereed) Published
Abstract [en]

A 26 years old female patient was examined twenty-four hours after observing laser-induced plasma formation in a process of nanoparticle production complaining of bilateral central scotoma. The ophthalmologic evaluation included dilated fundus observation, fluorescein angiography, and optical coherence tomography (OCT). In the first assessment, visual acuity was 20/20 in the right eye and 20/25 in the left eye. Ophthalmologic evaluation revealed colour changes in the macular region of both eyes. Optical coherence tomography showed a central interruption of the photoreceptor layer in both eyes and fluorescein angiography was normal. In subsequent appointments acuity was always 20/20 in both eyes. Abnormal optical coherence tomography findings disappeared in less than 5 months, but subjective complaints of scotoma in the left eye remained. Extra care must be taken in this type of experiment by, for example, reducing the time that the retina is directly exposed to the plasma radiation. 

Abstract [pt]

Uma paciente de 26 anos foi examinada 24 horas após observar a formação de plasma induzido por laser em um processo de produção de nanopartículas, referindo escotoma central bilateral. A avaliação oftalmológica incluiu observação dilatada da retina, angiofluoresceinografia e tomografia de coerência óptica (OCT). Na primeira avaliação, a acuidade de 20/20 no olho direito e 20/25 no olho esquerdo. A avaliação oftalmológica revelou mudanças de coloração da região macular de ambos os olhos. A tomografia de coerência óptica mostrou uma interrupção central da camada de fotorreceptores em ambos os olhos, e a angiografia fluoresceínica foi normal. Nas consultas subsequentes a acuidade sempre foi 20/20 em ambos os olhos. Os achados da tomografia de coerência óptica anormais desapareceram em menos de cinco meses, mas as queixas subjetivas de escotoma no olho esquerdo permaneceram. Cuidado extra deve ser tomado para este tipo de experiência, por exemplo, reduzindo o tempo em que a retina é diretamente exposta à radiação de plasma.

Place, publisher, year, edition, pages
2013. Vol. 76, no 5, 317-319 p.
Keyword [en]
Retina/injuries, Tomography, optical coherence, Scotoma/diagnosis, Fluorescein angiography, Case report
Keyword [pt]
Retina/lesões, Tomografia de coerência óptica, Escotoma/diagnóstico, angiofluoresceinografia, Lasers, Relato de caso
National Category
Ophthalmology
Research subject
Natural Science, Optometry
Identifiers
URN: urn:nbn:se:lnu:diva-62147DOI: 10.1590/S0004-27492013000500015OAI: oai:DiVA.org:lnu-62147DiVA: diva2:1087657
Available from: 2017-04-09 Created: 2017-04-09 Last updated: 2017-04-10Bibliographically approved

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Macedo, António Filipe
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