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Adjusting to a sudden 'aging' of the lens
- Source :
- Journal of the Optical Society of America. A, Optics, image science, and vision, vol 33, iss 3, Tregillus, KEM; Werner, JS; & Webster, MA. (2016). Adjusting to a sudden "aging" of the lens. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 33(3), A129-A136. doi: 10.1364/JOSAA.33.00A129. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/8mw7s083
- Publication Year :
- 2016
- Publisher :
- eScholarship, University of California, 2016.
-
Abstract
- Color perception is known to remain largely stable across the lifespan despite the pronounced changes in sensitivity from factors such as the progressive brunescence of the lens. However, the mechanisms and timescales controlling these compensatory adjustments are still poorly understood. In a series of experiments, we tracked adaptation in observers after introducing a sudden change in lens density by having observers wear glasses with yellow filters that approximated the average spectral transmittance of a 70-year-old lens. Individuals were young adults and wore the glasses for 5 days for 8 hours per day while engaged in their normal activities. Achromatic settings were measured on a CRT before and after each daily exposure with the lenses on and off, and were preceded by 5 minutes of dark adaptation to control for short-term chromatic adaptation. During each day, there was a large shift in the white settings consistent with a partial compensation for the added lens density. However, there was little to no evidence of an after-image at the end of each daily session, and participants’ perceptual nulls were roughly aligned with the nulls for short-term chromatic adaptation, suggesting a rapid renormalization when the lenses were removed. The long-term drift was also extinguished by brief exposure to a white adapting field. The results point to distinct timescales and potentially distinct mechanisms compensating for changes in the chromatic sensitivity of the observer.
- Subjects :
- Adult
Aging
Adolescent
Color vision
Dark Adaptation
Optical Physics
01 natural sciences
Article
law.invention
010309 optics
03 medical and health sciences
Lens
Young Adult
0302 clinical medicine
Optics
law
Opthalmology and Optometry
Ocular
Lens, Crystalline
0103 physical sciences
Psychophysics
Humans
Chromatic scale
Bile Pigments
Adaptation
Electrical and Electronic Engineering
Eye Disease and Disorders of Vision
Mathematics
Aged
Color constancy
Crystalline
Adaptation, Ocular
business.industry
Atomic and Molecular Physics, and Optics
Afterimage
Electronic, Optical and Magnetic Materials
Lens (optics)
Eyeglasses
Achromatic lens
Chromatic adaptation
Computer Vision and Pattern Recognition
sense organs
business
030217 neurology & neurosurgery
Color Perception
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Journal of the Optical Society of America. A, Optics, image science, and vision, vol 33, iss 3, Tregillus, KEM; Werner, JS; & Webster, MA. (2016). Adjusting to a sudden "aging" of the lens. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 33(3), A129-A136. doi: 10.1364/JOSAA.33.00A129. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/8mw7s083
- Accession number :
- edsair.doi.dedup.....2156ccb0f7af1536f28840c349f75563
- Full Text :
- https://doi.org/10.1364/JOSAA.33.00A129.