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Type: Artigo de periódico
Title: Flicker Perimetry In Healthy Subjects: Influence Of Age And Gender, Learning Effect And Short-term Fluctuation.
Author: Bernardi, Luciana
Costa, Vital P
Shiroma, Lineu Oto
Abstract: To determine the mean critical fusion frequency and the short-term fluctuation, to analyze the influence of age, gender, and the learning effect in healthy subjects undergoing flicker perimetry. Study 1--95 healthy subjects underwent flicker perimetry once in one eye. Mean critical fusion frequency values were compared between genders, and the influence of age was evaluated using linear regression analysis. Study 2--20 healthy subjects underwent flicker perimetry 5 times in one eye. The first 3 sessions were separated by an interval of 1 to 30 days, whereas the last 3 sessions were performed within the same day. The first 3 sessions were used to investigate the presence of a learning effect, whereas the last 3 tests were used to calculate short-term fluctuation. Study 1--Linear regression analysis demonstrated that mean global, foveal, central, and critical fusion frequency per quadrant significantly decreased with age (p<0.05). There were no statistically significant differences in mean critical fusion frequency values between males and females (p>0.05), with the exception of the central area and inferonasal quadrant (p=0.049 and p=0.011, respectively), where the values were lower in females. Study 2--Mean global (p=0.014), central (p=0.008), and peripheral (p=0.03) critical fusion frequency were significantly lower in the first session compared to the second and third sessions. The mean global short-term fluctuation was 5.06 +/-1.13 Hz, the mean interindividual and intraindividual variabilities were 11.2+/-2.8% and 6.4+/-1.5%, respectively. This study suggests that, in healthy subjects, critical fusion frequency decreases with age, that flicker perimetry is associated with a learning effect, and that a moderately high short-term fluctuation is expected.
Subject: Adult
Age Factors
Middle Aged
Predictive Value Of Tests
Reference Values
Reproducibility Of Results
Sensitivity And Specificity
Sex Factors
Visual Field Tests
Visual Fields
Rights: aberto
Identifier DOI: 
Date Issue: -1-Uns- -1
Appears in Collections:Unicamp - Artigos e Outros Documentos

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