Fixation eye movement abnormalities and stereopsis recovery following strabismus repair

Abstract We evaluated the effects of strabismus repair on fixational eye movements (FEMs) and stereopsis recovery in patients with fusion maldevelopment nystagmus (FMN) and patients without nystagmus. Twenty-one patients with strabismus, twelve with FMN and nine without nystagmus, were tested before...

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Autores principales:	Talora L. Martin, Jordan Murray, Kiran Garg, Charles Gallagher, Aasef G. Shaikh, Fatema F. Ghasia
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dd537e8beb7d4d71b5368d181728e20f
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spelling	oai:doaj.org-article:dd537e8beb7d4d71b5368d181728e20f2021-12-02T18:30:45ZFixation eye movement abnormalities and stereopsis recovery following strabismus repair10.1038/s41598-021-93919-w2045-2322https://doaj.org/article/dd537e8beb7d4d71b5368d181728e20f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93919-whttps://doaj.org/toc/2045-2322Abstract We evaluated the effects of strabismus repair on fixational eye movements (FEMs) and stereopsis recovery in patients with fusion maldevelopment nystagmus (FMN) and patients without nystagmus. Twenty-one patients with strabismus, twelve with FMN and nine without nystagmus, were tested before and after strabismus repair. Eye-movements were recorded during a gaze-holding task under monocular viewing conditions. Fast (fixational saccades and quick phases of nystagmus) and slow (inter-saccadic drifts and slow phases of nystagmus) FEMs and bivariate contour ellipse area (BCEA) were analyzed in the viewing and non-viewing eye. Strabismus repair improved the angle of strabismus in subjects with and without FMN, however patients without nystagmus were more likely to have improvement in stereoacuity. The fixational saccade amplitudes and intersaccadic drift velocities in both eyes decreased after strabismus repair in subjects without nystagmus. The slow phase velocities were higher in patients with FMN compared to inter-saccadic drifts in patients without nystagmus. There was no change in the BCEA after surgery in either group. In patients without nystagmus, the improvement of the binocular function (stereopsis), as well as decreased fixational saccade amplitude and intersaccadic drift velocity, could be due, at least partially, to central adaptive mechanisms rendered possible by surgical realignment of the eyes. The absence of improvement in patients with FMN post strabismus repair likely suggests the lack of such adaptive mechanisms in patients with early onset infantile strabismus. Assessment of fixation eye movement characteristics can be a useful tool to predict functional improvement post strabismus repair.Talora L. MartinJordan MurrayKiran GargCharles GallagherAasef G. ShaikhFatema F. GhasiaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Talora L. Martin Jordan Murray Kiran Garg Charles Gallagher Aasef G. Shaikh Fatema F. Ghasia Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
description	Abstract We evaluated the effects of strabismus repair on fixational eye movements (FEMs) and stereopsis recovery in patients with fusion maldevelopment nystagmus (FMN) and patients without nystagmus. Twenty-one patients with strabismus, twelve with FMN and nine without nystagmus, were tested before and after strabismus repair. Eye-movements were recorded during a gaze-holding task under monocular viewing conditions. Fast (fixational saccades and quick phases of nystagmus) and slow (inter-saccadic drifts and slow phases of nystagmus) FEMs and bivariate contour ellipse area (BCEA) were analyzed in the viewing and non-viewing eye. Strabismus repair improved the angle of strabismus in subjects with and without FMN, however patients without nystagmus were more likely to have improvement in stereoacuity. The fixational saccade amplitudes and intersaccadic drift velocities in both eyes decreased after strabismus repair in subjects without nystagmus. The slow phase velocities were higher in patients with FMN compared to inter-saccadic drifts in patients without nystagmus. There was no change in the BCEA after surgery in either group. In patients without nystagmus, the improvement of the binocular function (stereopsis), as well as decreased fixational saccade amplitude and intersaccadic drift velocity, could be due, at least partially, to central adaptive mechanisms rendered possible by surgical realignment of the eyes. The absence of improvement in patients with FMN post strabismus repair likely suggests the lack of such adaptive mechanisms in patients with early onset infantile strabismus. Assessment of fixation eye movement characteristics can be a useful tool to predict functional improvement post strabismus repair.
format	article
author	Talora L. Martin Jordan Murray Kiran Garg Charles Gallagher Aasef G. Shaikh Fatema F. Ghasia
author_facet	Talora L. Martin Jordan Murray Kiran Garg Charles Gallagher Aasef G. Shaikh Fatema F. Ghasia
author_sort	Talora L. Martin
title	Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
title_short	Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
title_full	Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
title_fullStr	Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
title_full_unstemmed	Fixation eye movement abnormalities and stereopsis recovery following strabismus repair
title_sort	fixation eye movement abnormalities and stereopsis recovery following strabismus repair
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/dd537e8beb7d4d71b5368d181728e20f
work_keys_str_mv	AT taloralmartin fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair AT jordanmurray fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair AT kirangarg fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair AT charlesgallagher fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair AT aasefgshaikh fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair AT fatemafghasia fixationeyemovementabnormalitiesandstereopsisrecoveryfollowingstrabismusrepair
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Fixation eye movement abnormalities and stereopsis recovery following strabismus repair

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