| Autor: |
Maurizio Fossarello, S. Solarino, A. Serra, A. Piras, M. Piu, M. Piscitelli, Ignazio Alberto Zucca |
| Rok vydání: |
1991 |
| Předmět: |
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| Zdroj: |
Documenta Ophthalmologica Proceedings Series ISBN: 9789401056809 |
| DOI: |
10.1007/978-94-011-3774-4_55 |
| Popis: |
We describe the effects of yellow filter lenses on visual acuity, colour vision, and visual field in three brothers affected by congenital stationary night blindness associated with myopia and nystagmus (X-linked). All the children had depressed visual acuity, a tritan axis on the Farnsworth-Munsell (FM) 100-hue test and a normal photopic visual field. The cutoff point of yellow filters was at 540, 560 and 580 nm. A slight increase of visual acuity was observed in two sibs using the 560 nm filters. The visual field narrowed with all the filters. On the FM 100-hue test a scotopic axis was observed in one patient, while an anarchic pattern was induced by the yellow filters in the other two sibs. The total score generally worsened as the cutoff point increased. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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