Suprathreshold Motion Perception in Anisometropic Amblyopia: Interocular Speed Matching and the Pulfrich Effect
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Le résumé fourni par la source
SIGNIFICANCE: Our results indicate that the difference in perceived luminance between the amblyopic and fellow eyes that is present under dichoptic viewing conditions does not affect the perceived speed of suprathreshold motion stimuli. This finding provides a new insight into suprathreshold perception in amblyopia. PURPOSE: Interocular matching experiments indicate that dichoptically presented stimuli have a lower perceived luminance in amblyopic eyes relative to fellow eyes. This may be a consequence of interocular suppression. We investigated whether this effect extends to suprathreshold motion perception. METHODS: Participants with amblyopia and control observers matched the perceived speed of dichoptically presented random-dot kinematograms and the perceived luminance of gray patches. Control participants also performed the speed matching task with a neutral density filter over one eye to simulate a perceived luminance reduction. RESULTS: The amblyopia group exhibited lower perceived luminance in the amblyopic than in the fellow eye, as has previously been reported. However, interocular speed matching was veridical. For control observers, perceived speed was reduced in the eye with a neutral density filter relative to the nonfiltered eye. To assess whether the perceived luminance reduction in the amblyopic eye affected binocular function, we also measured the Pulfrich effect in the amblyopia group with equal luminance presented to each eye. No patients reported a spontaneous Pulfrich effect. CONCLUSIONS: The results suggest that suprathreshold speed perception is intact in the amblyopic eye when both eyes are open.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Suprathreshold Motion Perception in Anisometropic Amblyopia: Interocular Speed Matching and the Pulfrich Effect
- Date Crossref
- 01/06/2019
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Kanagawa University Department of Human Science pays non établi dans la noticeUniversité ou école supérieure
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Kanagawa University of Human Services pays non établi dans la noticeUniversité ou école supérieure
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Kawasaki Medical School Hospital Department of Ophthalmology pays non établi dans la noticeÉtablissement de santé
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University of Waterloo pays non établi dans la noticeUniversité ou école supérieure
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Kawasaki Medical School pays non établi dans la noticeUniversité ou école supérieure
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School of Optometry and Vision Science pays non établi dans la noticeUniversité ou école supérieure
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Department of Ophthalmology pays non établi dans la noticeInstitution
Department of Human Science — Kanagawa University, Kanagawa University of Human Services et Department of Ophthalmology — Kawasaki Medical School Hospital, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.