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Paula d. Silva, Augusto Paranhos; Evaluation The Influence of a Hands Free Speakerphone Conversation Simulation In The Visual Stimulus Tested by The Conventional Perimetry And Frequency-doubling Technology Perimetry. Invest. Ophthalmol. Vis. Sci. 2012;53(14):4811.
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Assess the influence of a hands free speakerphone conversation simulation in the visual tested by the standard perimetry (SAP) and matrix frequency-doubling technology perimetry (FDT).
Inclusion criteria: eighteen years old, visual acuity better than 20/40 in the randomized eye , at least high school completed. Exclusion criteria: diagnosis of glaucoma or any other disease that can affect visual field in the study eye, or intra ocular pression greater or equal 21mmHG, large optic cup greater than 0,7, abnormal visual fields in the baseline test. Patients were asked to performed FDT and SAP with and without a standardized questionnaire to simulate a conversation during both psychophysics tests to simulate a hands free speakerphone conversation. The tests were performed in different days. The difference regarding fixation lost, false positive and negative and mean deviation among each situation were analyzed with ANOVA for repeated measurements and Tuckey HSD for multiple comparison.
Thirty-nine eyes of 39 patients were analyzed. The questionnaire gives a statistically significant influence on the quality of performance for both SAP and FDT test for all analyzed parameters (P<0.05). There were no differences for any parameter when SAP and FDT were compared in the questionnaire situation (P>0.05).
Hands free speakerphone conversation simulation could affect significantly the ability to performer both SAP and FDT. These effects on a simple psychophysical test could be extrapolated for more complex activities like driving
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