Depth Perception with a Newly Developed Microscope Stereotest

Kayo Shinomiya,1 Takashi Fujikado,2 Akiko Kitora,1 Satoe Okamoto,1 Akiko Iwata,1 Yoko Ogushi,1 Yoshinori Mitamura1 1Department of Ophthalmology, Graduate School of Medicine, Tokushima University, Tokushima, Japan; 2Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanCorresp...

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Autores principales:	Shinomiya K, Fujikado T, Kitora A, Okamoto S, Iwata A, Ogushi Y, Mitamura Y
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2021
Materias:	anisometropia dynamic stereopsis stereopsis three-rods test Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/085de3063fdb45c29c57f1565e4c26f8
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spelling	oai:doaj.org-article:085de3063fdb45c29c57f1565e4c26f82021-12-02T15:16:24ZDepth Perception with a Newly Developed Microscope Stereotest1177-5483https://doaj.org/article/085de3063fdb45c29c57f1565e4c26f82021-09-01T00:00:00Zhttps://www.dovepress.com/depth-perception-with-a-newly-developed-microscope-stereotest-peer-reviewed-fulltext-article-OPTHhttps://doaj.org/toc/1177-5483Kayo Shinomiya,1 Takashi Fujikado,2 Akiko Kitora,1 Satoe Okamoto,1 Akiko Iwata,1 Yoko Ogushi,1 Yoshinori Mitamura1 1Department of Ophthalmology, Graduate School of Medicine, Tokushima University, Tokushima, Japan; 2Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanCorrespondence: Kayo ShinomiyaDepartment of Ophthalmology, Graduate School of Medicine, Tokushima University, 3-18-15, Kuramoto-cho, Tokushima, 770-8503, JapanTel +81 088-633-7163Fax +81 088-631-4848Email shinomi@tokushima-u.ac.jpPurpose: We aimed to compare the depth perception under a microscope between binocular and monocular conditions using a newly developed microscopic stereotest (M-stereotest) and examine the effect of anisometropia on depth perception under a microscope.Subjects and Methods: Thirty young and healthy subjects were examined. A manipulator attached with a stainless wire was placed under the objective lens of a stereomicroscope. The wire was moved up manually, and the subjects were instructed to stop the knob movement once the wire reached the same height as the fixed two wires. The deviation from the height of the fixed wires was measured under a best optically corrected binocular, a best optically corrected monocular, or an anisometropic binocular [± 3 diopters (D) in the dominant or nondominant eye] condition.Results: The deviation was significantly smaller in the binocular condition than in the monocular dominant eye condition (0.38 ± 0.26 mm vs 1.89 ± 1.15 mm, p < 0.001) and was also significantly smaller in the best optically corrected binocular than in the anisometropic binocular condition [1.07 ± 1.00 mm (− 3.0 D), p = 0.003; 0.85 ± 0.67 mm (+3.0 D), p < 0.001].Conclusion: Depth perception under the microscope is more accurate under the binocular than in the monocular condition, indicating the potential role of stereopsis. Anisometropia deteriorates depth perception, suggesting that refractive error should be corrected during microscopic work, such as during ophthalmic surgery.Keywords: anisometropia, dynamic stereopsis, stereopsis, three-rods testShinomiya KFujikado TKitora AOkamoto SIwata AOgushi YMitamura YDove Medical Pressarticleanisometropiadynamic stereopsisstereopsisthree-rods testOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 15, Pp 3901-3908 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anisometropia dynamic stereopsis stereopsis three-rods test Ophthalmology RE1-994
spellingShingle	anisometropia dynamic stereopsis stereopsis three-rods test Ophthalmology RE1-994 Shinomiya K Fujikado T Kitora A Okamoto S Iwata A Ogushi Y Mitamura Y Depth Perception with a Newly Developed Microscope Stereotest
description	Kayo Shinomiya,1 Takashi Fujikado,2 Akiko Kitora,1 Satoe Okamoto,1 Akiko Iwata,1 Yoko Ogushi,1 Yoshinori Mitamura1 1Department of Ophthalmology, Graduate School of Medicine, Tokushima University, Tokushima, Japan; 2Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanCorrespondence: Kayo ShinomiyaDepartment of Ophthalmology, Graduate School of Medicine, Tokushima University, 3-18-15, Kuramoto-cho, Tokushima, 770-8503, JapanTel +81 088-633-7163Fax +81 088-631-4848Email shinomi@tokushima-u.ac.jpPurpose: We aimed to compare the depth perception under a microscope between binocular and monocular conditions using a newly developed microscopic stereotest (M-stereotest) and examine the effect of anisometropia on depth perception under a microscope.Subjects and Methods: Thirty young and healthy subjects were examined. A manipulator attached with a stainless wire was placed under the objective lens of a stereomicroscope. The wire was moved up manually, and the subjects were instructed to stop the knob movement once the wire reached the same height as the fixed two wires. The deviation from the height of the fixed wires was measured under a best optically corrected binocular, a best optically corrected monocular, or an anisometropic binocular [± 3 diopters (D) in the dominant or nondominant eye] condition.Results: The deviation was significantly smaller in the binocular condition than in the monocular dominant eye condition (0.38 ± 0.26 mm vs 1.89 ± 1.15 mm, p < 0.001) and was also significantly smaller in the best optically corrected binocular than in the anisometropic binocular condition [1.07 ± 1.00 mm (− 3.0 D), p = 0.003; 0.85 ± 0.67 mm (+3.0 D), p < 0.001].Conclusion: Depth perception under the microscope is more accurate under the binocular than in the monocular condition, indicating the potential role of stereopsis. Anisometropia deteriorates depth perception, suggesting that refractive error should be corrected during microscopic work, such as during ophthalmic surgery.Keywords: anisometropia, dynamic stereopsis, stereopsis, three-rods test
format	article
author	Shinomiya K Fujikado T Kitora A Okamoto S Iwata A Ogushi Y Mitamura Y
author_facet	Shinomiya K Fujikado T Kitora A Okamoto S Iwata A Ogushi Y Mitamura Y
author_sort	Shinomiya K
title	Depth Perception with a Newly Developed Microscope Stereotest
title_short	Depth Perception with a Newly Developed Microscope Stereotest
title_full	Depth Perception with a Newly Developed Microscope Stereotest
title_fullStr	Depth Perception with a Newly Developed Microscope Stereotest
title_full_unstemmed	Depth Perception with a Newly Developed Microscope Stereotest
title_sort	depth perception with a newly developed microscope stereotest
publisher	Dove Medical Press
publishDate	2021
url	https://doaj.org/article/085de3063fdb45c29c57f1565e4c26f8
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Depth Perception with a Newly Developed Microscope Stereotest

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