Predictive factors for the perceptual learning in stereodeficient subjects


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Portela Camino, Juan A and Martín González, Santiago and Ruiz Alcocer, Javier and Illarramendi Mendicute, Igor and Piñero Llorens, David Pablo and Garrido Mercado, Rafaela (2020) Predictive factors for the perceptual learning in stereodeficient subjects. Journal of Optometry . 10 p.. ISSN 1888-4296 (In Press)

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Background:Stereopsis is a valuable feature of human visual perception which is critically impaired in amblyopia, but can be improved through perceptual learning (PL). This article aims to determine the variables affecting the outcomes and intensity of a stereoacuity stimulation program.
Methods: Re-analysis of a previous study in stereodeficient subjects with a history of amblyopia. Sixteen subjects (12 females, 4 males) aged between 7 and 14 received stereopsis stimulation through a PL program at home. A correlation analysis evaluated whether treatment intensity or percentage improvement were related to age or baseline stereoacuity measurements. Further analysis was performed to assess whether the type of amblyopia conditioned the PL treatment (Fischer Statistical Test).
Results: No significant correlation was found between age and percentage improvement (rho = −0.08, p = 0.749), nor was age correlated with treatment intensity (rho = 0.170, p = 0.544). However, a correlation did exist between baseline stereoacuity levels and treatment intensity (rho = 0.734, p = 0.001). Baseline stereoacuity and percentage improvement had a negative correlation (rho = −0.748, p = 0.005), while treatment intensity showed only a weak association with the type of amblyopia (p = 0.064).
Conclusions: Present results suggest that perceptual learning in stereodeficient subjects is not influenced by either the subject's age or the type of amblyopia. Baseline stereoacuity, on the other hand, seems to be a predicting factor for perceptual learning outcomes. According to our study, subjects with poor basal stereoacuity needed more sessions to improve and their percentage improvement was lower. However, due to the reduced size of the sample, the results should be considered with caution.

Item Type:Article
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Received 21 October 2019, Accepted 9 March 2020, Available online 16 June 2020.

Uncontrolled Keywords:Amblyopia; Perceptual learning; Age; Baseline stereoacuity level; Computer video game
Subjects:Sciences > Computer science > Computer programming
Medical sciences > Optics > Optometry
ID Code:61732
Deposited On:24 Aug 2020 18:23
Last Modified:31 Aug 2020 10:48

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