ABSTRACT
The visual system of women changes during pregnancy. Few reports have addressed the effects of pregnancy on color vision. We aimed to compare the color vision of women in the first, second, and third trimesters of pregnancy. Fifty women were divided into first (n=10), second (n=10), third trimester pregnancy groups (n=10), and non-pregnant group (n=20). We used the Farnsworth D15 and Lanthony desaturated D15 (D15d) tests. The hue ordering quantified the amount of error (C-index) and the chromatic selectivity of the errors (S-index). Bland-Altman analysis was applied to the hue ordering data. No difference was found for Farnsworth D15 test results obtained from the pregnant groups and the non-pregnant group (P<0.0083). For the Lanthony D15 desaturated test, the third trimester pregnant group had higher C-index and S-index than non-pregnant women and first-trimester pregnant women (P<0.0083). The Bland-Altman analysis showed that the limits of agreement increased as pregnancy advanced, and the errors were biased to the D15d test. In this study, color vision was impaired during pregnancy. Color vision evaluation could be used as an indicator of the functional status of the central vision during pregnancy.
Subject(s)
Humans , Female , Pregnancy , Adult , Vision Tests/methods , Color Perception , Color Vision , Pregnancy Complications , Pregnancy Trimester, Second , Pregnancy Trimester, Third , Pregnancy Trimester, FirstABSTRACT
Objetivo: Este estudo tem como objetivo de avaliar a confiabilidade do exame ecográfico na avaliaçäo de escavaçöes do nervo óptico menores ou iguais a 0.3 e maiores ou iguais a 0.9. Material e métodos: Foram analisados 53 olhos, de 30 pacientes, com meios ópticos transparentes, submetidos à ecografia ocular modo B para avaliaçäo da escavaçäo do disco óptico. A biomicroscopia, 26 possuíam escavaçäo pequena (grupo 1) e 27 escavaçäo grande (grupo 2). Resultados: Os exames impressos foram avaliados por dois observadores, e a ecografia ocular se mostrou confiável com índice Kappa de 0.77(mais ou menos 0.14). A sensibilidade e a especificidade, com intervalo de confiança de 95 por cento, foram de 71.4 por cento (53.4 - 81.1)e de 96.2 por cento (59.6 - 90.1). Conclusäo: A ecografia é método confiável para avaliaçäo da escavaçäo do disco óptico permitindo a distinçäo entre grupo <= 0.3 e o grupo >= 0.9. No entanto, como método de ''screening'' seria mais importante nos resultados negativo.