Perceptual Adaptation to the Correction of Natural Astigmatism
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{"title"=>"Perceptual Adaptation to the Correction of Natural Astigmatism", "type"=>"journal", "authors"=>[{"first_name"=>"Maria", "last_name"=>"Vinas", "scopus_author_id"=>"55353974000"}, {"first_name"=>"Lucie", "last_name"=>"Sawides", "scopus_author_id"=>"25227029600"}, {"first_name"=>"Pablo", "last_name"=>"de Gracia", "scopus_author_id"=>"36238714000"}, {"first_name"=>"Susana", "last_name"=>"Marcos", "scopus_author_id"=>"7006647818"}], "year"=>2012, "source"=>"PLoS ONE", "identifiers"=>{"pmid"=>"23050021", "isbn"=>"1932-6203", "doi"=>"10.1371/journal.pone.0046361", "issn"=>"19326203", "scopus"=>"2-s2.0-84866849106", "pui"=>"365742251", "sgr"=>"84866849106"}, "id"=>"11c230e5-20aa-34f3-953c-0a263a3b30eb", "abstract"=>"BACKGROUND: The visual system adjusts to changes in the environment, as well as to changes within the observer, adapting continuously to maintain a match between visual coding and visual environment. We evaluated whether the perception of oriented blur is biased by the native astigmatism, and studied the time course of the after-effects following spectacle correction of astigmatism in habitually non-corrected astigmats.\\n\\nMETHODS AND FINDINGS: We tested potential shifts of the perceptual judgments of blur orientation in 21 subjects. The psychophysical test consisted on a single interval orientation identification task in order to measure the perceived isotropic point (astigmatism level for which the image did not appear oriented to the subject) from images artificially blurred with constant blur strength (B=1.5 D), while modifying the orientation of the blur according to the axis of natural astigmatism of the subjects. Measurements were performed after neutral (gray field) adaptation on naked eyes under full correction of low and high order aberrations. Longitudinal measurements (up to 6 months) were performed in three groups of subjects: non-astigmats and corrected and uncorrected astigmats. Uncorrected astigmats were provided with proper astigmatic correction immediately after the first session. Non-astigmats did not show significant bias in their perceived neutral point, while in astigmatic subjects the perceived neutral point was significantly biased, typically towards their axis of natural astigmatism. Previously uncorrected astigmats shifted significantly their perceived neutral point towards more isotropic images shortly (2 hours) after astigmatic correction wear, and, once stabilized, remained constant after 6 months. The shift of the perceived neutral point after correction of astigmatism was highly correlated with the amount of natural astigmatism.\\n\\nCONCLUSIONS: Non-corrected astigmats appear to be naturally adapted to their astigmatism, and astigmatic correction significantly changes their perception of their neutral point, even after a brief period of adaptation.", "link"=>"http://www.mendeley.com/research/perceptual-adaptation-correction-natural-astigmatism", "reader_count"=>22, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Researcher"=>3, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>2, "Student > Master"=>2, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Researcher"=>3, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>2, "Student > Master"=>2, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>2, "Engineering"=>1, "Mathematics"=>1, "Agricultural and Biological Sciences"=>1, "Medicine and Dentistry"=>6, "Neuroscience"=>1, "Physics and Astronomy"=>3, "Psychology"=>6, "Computer Science"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>6}, "Neuroscience"=>{"Neuroscience"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>3}, "Psychology"=>{"Psychology"=>6}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Computer Science"=>{"Computer Science"=>1}, "Mathematics"=>{"Mathematics"=>1}, "Unspecified"=>{"Unspecified"=>2}}, "reader_count_by_country"=>{"Germany"=>1}, "group_count"=>1}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/569596"], "description"=>"<p>Optometric subjective refractions (spherical error, cylinder, axis), orientation of the retinal blur, and ages. The measured eye is shown in bold.</p>", "links"=>[], "tags"=>["physiology", "neuroscience", "physics"], "article_id"=>240094, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.t001", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Subjects_profile_/240094", "title"=>"Subjects' profile.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-02-19 22:42:09"}
  • {"files"=>["https://ndownloader.figshare.com/files/569132"], "description"=>"<p>Astigmatic blur was generated by varying astigmatism (from −2 µm to +2 µm), and defocus to maintain constant blur strength (B = 1.5 D). Image 101 was isotropically blurred. Top panel: image series presented to all subjects from G1, with vertically oriented blur (images 1–100) to horizontally oriented blur (images 102 to 201). Bottom panel: an example of image series presented to G2/G3 (the example corresponds to G2_C in particular, with images blurred along the axis of natural astigmatism of the eye (75°) to a 90° rotated axis (165°).</p>", "links"=>[], "tags"=>["images"], "article_id"=>239623, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.g001", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Examples_of_test_images_series_/239623", "title"=>"Examples of test images series.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 22:39:31"}
  • {"files"=>["https://ndownloader.figshare.com/files/569314"], "description"=>"<p>Perceived neutral point (µm of astigmatism) for all subjects and in all sessions (First session: purple bars; 2-hrs: violet bars; 1-week: red bars; 1-month: green bars; 6-months: yellow bars). A: G1, non-astigmats. B: G2, habitually-corrected astigmats. C: G3, habitually-non-corrected astigmats. For illustration purposes, the first and last images of the series are shown (−2 µm to +2 µm of astigmatism). G1: 0°/90°; G2 and G3: tuned to the axis of natural astigmatism/90°. Error bars stand for intra-subject variability (standard deviation) for repeated measurements (4 times/test).</p>", "links"=>[], "tags"=>["physiology", "neuroscience", "physics"], "article_id"=>239814, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.g003", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Perceived_neutral_point_/239814", "title"=>"Perceived neutral point.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 22:40:38"}
  • {"files"=>["https://ndownloader.figshare.com/files/569410"], "description"=>"<p>A. Longitudinal variation of the perceived neutral point (µm astigmatism, absolute value), averaged across subjects in each group (G1: green squares; G2: blue triangles; G3: red triangles). B. Longitudinal variations of the perceived neutral point (µm astigmatism) averaged across subjects of the 2 subgroups of G3: G3 axis (4/7 subjects) and G3 perpendicular axis (3/7 subjects). ** indicates statistically significant shifts (p<0.01), from the first session to other measurement sessions (2 hrs, 1 week, 1 month and 6 months) for G3. Error bars stand for inter-subject variability (standard deviation).</p>", "links"=>[], "tags"=>["variations"], "article_id"=>239906, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.g004", "stats"=>{"downloads"=>0, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Longitudinal_variations_in_the_perception_of_neutral_point_/239906", "title"=>"Longitudinal variations in the perception of neutral point.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 22:41:10"}
  • {"files"=>["https://ndownloader.figshare.com/files/569196"], "description"=>"<p>RMS wavefront error for natural aberrations for HOAs and astigmatism (yellow bars), HOAs (blue bars), and, residual aberrations after AO correction (green bars), averaged across subjects, groups and measurement sessions. Error bars indicate inter-subject variability. ** indicates a significantly larger RMS (p<0.01) for HOA+astigmatism for G2 and G3 than for G1.</p>", "links"=>[], "tags"=>["wavefront"], "article_id"=>239694, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.g002", "stats"=>{"downloads"=>3, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_RMS_wavefront_error_/239694", "title"=>"RMS wavefront error.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 22:39:59"}
  • {"files"=>["https://ndownloader.figshare.com/files/569515"], "description"=>"<p>Correlation between the shift of the perceived neutral point (difference between the perceived neutral point measured in the first session, S0A, and the 6-month session, S3) and the natural astigmatism for subjects. Astigmatism is represented in terms of RMS, in µm (G1: green squares; G2: blue triangles; G3: red triangles). Error bars stand for inter-subject variability (standard deviation).</p>", "links"=>[], "tags"=>["astigmatism"], "article_id"=>240011, "categories"=>["Physiology", "Neuroscience", "Physics"], "users"=>["Maria Vinas", "Lucie Sawides", "Pablo de Gracia", "Susana Marcos"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0046361.g005", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Correlation_between_the_shift_of_the_perceived_neutral_point_and_natural_astigmatism_of_the_subjects_/240011", "title"=>"Correlation between the shift of the perceived neutral point and natural astigmatism of the subjects.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 22:41:46"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"44", "full-text"=>"55", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"5"}
  • {"unique-ip"=>"22", "full-text"=>"23", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"8"}
  • {"unique-ip"=>"27", "full-text"=>"28", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"9"}
  • {"unique-ip"=>"39", "full-text"=>"45", "pdf"=>"5", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"10"}
  • {"unique-ip"=>"27", "full-text"=>"31", "pdf"=>"5", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"12"}

Relative Metric

{"start_date"=>"2012-01-01T00:00:00Z", "end_date"=>"2012-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences", "average_usage"=>[322, 550, 671, 773, 864, 955, 1048, 1135, 1223, 1308, 1387, 1465, 1534, 1602, 1673, 1744, 1813, 1885, 1955, 2026, 2093, 2160, 2228, 2290, 2349]}, {"subject_area"=>"/Engineering and technology", "average_usage"=>[308, 500, 607, 700, 782, 876, 957, 1039, 1128, 1214, 1290, 1365, 1431, 1496, 1560, 1634, 1695, 1772, 1839, 1908, 1972, 2043, 2106, 2179, 2246]}, {"subject_area"=>"/Medicine and health sciences/Anatomy and physiology", "average_usage"=>[308, 539, 659, 759, 852, 941, 1028, 1113, 1197, 1275, 1353, 1423]}, {"subject_area"=>"/Physical sciences/Physics", "average_usage"=>[298, 476, 578, 665, 743, 821, 891, 962, 1036, 1108, 1174, 1240, 1312, 1371, 1430, 1494, 1551, 1609, 1673, 1736, 1795, 1857, 1913, 1976, 2035]}]}
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