Field quadrant asymmetry in perimetric thresholds: results of normal and red-green-deficient persons
| Autor: | Markka T. Leinonen, Valter Elenius |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Adult
Male medicine.medical_specialty genetic structures Adolescent Light media_common.quotation_subject Color Vision Defects Audiology Asymmetry Quadrant (abdomen) Optics Sensory threshold Medicine Humans Photoreceptor Cells media_common business.industry General Medicine Sensory Systems Visual field Ophthalmology Sensory Thresholds Champ visuel Visual Field Tests Visual Fields business Color Perception |
| Zdroj: | Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde. 208(3) |
| ISSN: | 0030-3755 |
| Popis: | Perimetric thresholds of normal and red-green-deficient persons were measured using three colored test stimuli and a low-intensity white background. Meridians of 45 degrees, 135 degrees, 225 degrees and 315 degrees were tested within 30 degrees peripherally. A statistically significant sensitivity difference between the quadrants was found at eccentricities of 5-30 degrees from the center with the highest sensitivity in the lower temporal field and the lowest one in the upper nasal field, this difference being slightly larger when tested with red (615 nm) or violet (443 nm) light compared with blue-green (497 nm) test light. No difference in the field quadrant sensitivity was observed between the results of the series of normal and red-green-deficient persons. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|