Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness

Xue Tan, Aya Aoki, Yasuo YanagiDepartment of Ophthalmology, University of Tokyo School of Medicine, Hongo, Bunkyo-ku, Tokyo, JapanAbstract: Patients with the complete form of congenital stationary night blindness (CSNB) often have reduced visual acuity, myopia, impaired night vision, and sometimes n...

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Autores principales:	Tan X, Aoki A, Yanagi Y
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/15cb5db755a34188ba98b13302186507
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spelling	oai:doaj.org-article:15cb5db755a34188ba98b133021865072021-12-02T03:25:03ZColor vision abnormality as an initial presentation of the complete type of congenital stationary night blindness1177-54671177-5483https://doaj.org/article/15cb5db755a34188ba98b133021865072013-08-01T00:00:00Zhttp://www.dovepress.com/color-vision-abnormality-as-an-initial-presentation-of-the-complete-ty-a13928https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Xue Tan, Aya Aoki, Yasuo YanagiDepartment of Ophthalmology, University of Tokyo School of Medicine, Hongo, Bunkyo-ku, Tokyo, JapanAbstract: Patients with the complete form of congenital stationary night blindness (CSNB) often have reduced visual acuity, myopia, impaired night vision, and sometimes nystagmus and strabismus, however, they seldom complain of color vision abnormality. A 17-year-old male who was at technical school showed abnormalities in the color perception test for employment, and was referred to our hospital for a detailed examination. He had no family history of color vision deficiency and no other symptoms. During the initial examination, his best-corrected visual acuity was 1.2 in both eyes. His fundus showed no abnormalities except for somewhat yellowish reflex in the fovea of both eyes. Electroretinogram (ERG) showed a good response in cone ERG and 30 Hz flicker ERG, however, the bright flash, mixed rod and cone ERG showed a negative type with a reduced b-wave (positive deflection). There was no response in the rod ERG, either. From the findings of the typical ERG, the patient was diagnosed with complete congenital stationary night blindness. This case underscores the importance of ERG in order to diagnose the cause of a color vision anomaly.Keywords: congenital stationary night blindness, CSNB, electroretinogram, ERG, color vision defectTan XAoki AYanagi YDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 1587-1590 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Tan X Aoki A Yanagi Y Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
description	Xue Tan, Aya Aoki, Yasuo YanagiDepartment of Ophthalmology, University of Tokyo School of Medicine, Hongo, Bunkyo-ku, Tokyo, JapanAbstract: Patients with the complete form of congenital stationary night blindness (CSNB) often have reduced visual acuity, myopia, impaired night vision, and sometimes nystagmus and strabismus, however, they seldom complain of color vision abnormality. A 17-year-old male who was at technical school showed abnormalities in the color perception test for employment, and was referred to our hospital for a detailed examination. He had no family history of color vision deficiency and no other symptoms. During the initial examination, his best-corrected visual acuity was 1.2 in both eyes. His fundus showed no abnormalities except for somewhat yellowish reflex in the fovea of both eyes. Electroretinogram (ERG) showed a good response in cone ERG and 30 Hz flicker ERG, however, the bright flash, mixed rod and cone ERG showed a negative type with a reduced b-wave (positive deflection). There was no response in the rod ERG, either. From the findings of the typical ERG, the patient was diagnosed with complete congenital stationary night blindness. This case underscores the importance of ERG in order to diagnose the cause of a color vision anomaly.Keywords: congenital stationary night blindness, CSNB, electroretinogram, ERG, color vision defect
format	article
author	Tan X Aoki A Yanagi Y
author_facet	Tan X Aoki A Yanagi Y
author_sort	Tan X
title	Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
title_short	Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
title_full	Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
title_fullStr	Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
title_full_unstemmed	Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
title_sort	color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/15cb5db755a34188ba98b13302186507
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Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness

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