Patching and Suppression in Amblyopia: One Mechanism or Two?
amblyopia
binocular therapy
interocular suppression
patching
visual acuity
Journal
Frontiers in neuroscience
ISSN: 1662-4548
Titre abrégé: Front Neurosci
Pays: Switzerland
ID NLM: 101478481
Informations de publication
Date de publication:
2019
2019
Historique:
received:
25
09
2019
accepted:
03
12
2019
entrez:
4
2
2020
pubmed:
6
2
2020
medline:
6
2
2020
Statut:
epublish
Résumé
To determine if benefits from occlusion therapy are due to decreased suppression from the fellow eye in children with amblyopia. Ten newly diagnosed amblyopes (7.2 ± 1.4 years old), two with strabismus and eight with anisometropia, participated. Patients were first given a 2-month period of refractive adaptation, followed by occlusion therapy (i.e., patching their fellow eye with an opaque patch for 4 h/day). Visual acuity of the amblyopic eye and interocular suppression were measured before and after 0.5, 1, 2, 4, and 6 months of occlusion therapy. We quantified interocular suppression with a binocular phase combination task. Visual acuity (in logMAR) improved from 0.50 ± 0.22 (mean ± SD) to 0.33 ± 0.20 for patients who finished a short-term (2 months) occlusion (A1-A10), from 0.53 ± 0.20 to 0.32 ± 0.22 for patients who finished a medium-term (4 months) occlusion (A1-A9), and from 0.48 ± 0.19 to 0.22 ± 0.10 for patients who finished a long-term (6 months) occlusion (A1-A8). Although their visual acuity significantly improved, their degree of suppression, which was abnormal in all cases, did not change consistently. This was true in all durations of occlusion therapy. Reduced suppression from the fixing eye might not be result from occlusion therapy.
Identifiants
pubmed: 32009874
doi: 10.3389/fnins.2019.01364
pmc: PMC6974542
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1364Informations de copyright
Copyright © 2020 Chen, He, Mao, Chen, Zhou and Hess.
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