Effects of higher-order aberrations on contrast acuity as a function of light level
| Autor: | John L. Barbur, Christopher Dainty, Eugenie Dalimier |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
medicine.medical_specialty
genetic structures business.industry Mesopic vision media_common.quotation_subject Function (mathematics) eye diseases Atomic and Molecular Physics and Optics Pupil Aberrations of the eye Optics Ophthalmology medicine Contrast (vision) Scotopic vision Adaptive optics business Mathematics media_common Photopic vision |
| Zdroj: | Journal of Modern Optics. 55:791-803 |
| ISSN: | 1362-3044 0950-0340 |
| Popis: | The effects of higher-order ocular aberrations on functional visual performance were assessed for seven young healthy subjects, as a function of light level. Contrast acuity thresholds were measured for a functional vision test with and without correction of higher-order aberrations and at a number of different pupil sizes in three of the subjects investigated. A visual simulator incorporating an adaptive optics (AO) system was used for this purpose. The results show that when light level is decreased, the drop in neural contrast sensitivity limits the impact that increased optical degradations have on vision. The expected AO benefit for functional vision is given for scotopic, mesopic and photopic regimes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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