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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| Format: | Article |
| Language: | English |
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Dove Medical Press
2013-08-01
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| Series: | Clinical Ophthalmology |
| Online Access: | http://www.dovepress.com/color-vision-abnormality-as-an-initial-presentation-of-the-complete-ty-a13928 |
| _version_ | 1819202812421079040 |
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| author | Tan X Aoki A Yanagi Y |
| author_facet | Tan X Aoki A Yanagi Y |
| author_sort | Tan X |
| collection | DOAJ |
| 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 |
| first_indexed | 2024-12-23T04:09:58Z |
| format | Article |
| id | doaj.art-15cb5db755a34188ba98b13302186507 |
| institution | Directory Open Access Journal |
| issn | 1177-5467 1177-5483 |
| language | English |
| last_indexed | 2024-12-23T04:09:58Z |
| publishDate | 2013-08-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Clinical Ophthalmology |
| spelling | doaj.art-15cb5db755a34188ba98b133021865072022-12-21T18:00:32ZengDove Medical PressClinical Ophthalmology1177-54671177-54832013-08-012013default15871590Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindnessTan XAoki AYanagi YXue 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 defecthttp://www.dovepress.com/color-vision-abnormality-as-an-initial-presentation-of-the-complete-ty-a13928 |
| spellingShingle | Tan X Aoki A Yanagi Y Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness Clinical Ophthalmology |
| title | 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_short | 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 |
| url | http://www.dovepress.com/color-vision-abnormality-as-an-initial-presentation-of-the-complete-ty-a13928 |
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