国际眼科杂志2016，Vol.16Issue(12)：2279-2284,6.DOI:10.3980/j.issn.1672-5123.2016.12.28
环境亮度及瞳孔直径对人眼神经对比敏感度的影响
Effects of surround luminance and pupil diameter on neural contrast sensitivity function
摘要
Abstract
• AIM: To analysis and compare the influence of surround luminance and pupil diameter on neural contrast sensitivity function ( NCSF ) and contrast sensitivity function ( CSF) .•METHODS: Ten healthy male volunteers ( 10 eyes ) were recruited in this study, and the right eye was tested in this experiment. Different surround luminance levels and glare were set by Vision Monitor System to measure CSF curves of normal pupil, 3. 0mm pupil and 5. 0mm pupil. Modulation transfer function ( MTF ) curves of 3. 0mm pupil and 5. 0mm pupil were measured by Optical Quality Analysis System. NCSF was the ratio of CSF and MTF.• RESULTS: NCSF and CSF curves went downward <br> considerably and the curve waves shifted towards low spatial frequency as the surround luminance decreases. Compared with NCSF, the curve waves of CSF shifted towards lower spatial frequency. The change of CSF was affected by NCSF and MTF. When pupil diameter increases, MTF curve went downward. While the NCSF and CSF curves mounted up at low spatial frequency in the mesopic and photopic visual environment and showed downward trend at high spatial frequency in excessive bright environment or with glare. In the scotopic visual environment, the slight pupil diameter change cannot considerably affect CSF and NCSF curves.•CONCLUSION:CSF is influenced by MTF and NCSF which reflects the function of the retina-brain neural system. The curve shape of CSF is similar to NCSF, but the curve wave is at lower spatial frequency. NCSF and CSF curves go downward as the surround luminance decreases. As the pupil diameter increases, NCSF and CSF curves mount up at low spatial frequency but show downward trend at high spatial frequency in excessive bright environment or with glare.关键词
对比敏感度/神经对比敏感度/亮度/瞳孔Key words
contrast sensitivity/neural contrast sensitivity/luminance/pupil引用本文复制引用
赵冠华,曹瑞丹,张磊,严伟明,陈涛,王斌,丁一峰,王美艳,张作明..环境亮度及瞳孔直径对人眼神经对比敏感度的影响[J].国际眼科杂志,2016,16(12):2279-2284,6.基金项目
全军后勤科研重大项目(No. AKJ11J002) （No. AKJ11J002）
全军后勤科研重点项目(No. BKJ14C008) （No. BKJ14C008）
