Shpak A A
IRTC Eye Microsurgery, Moscow, Russia.
Acta Ophthalmol (Copenh). 1992 Oct;70(5):587-92. doi: 10.1111/j.1755-3768.1992.tb02137.x.
Studies on critical frequency of photic driving were performed on patients with optic atrophy, moderately expressed suprachiasmal lesions and normal subjects. A reduction was present only in optic atrophy patients. The critical frequency of photic driving showed significant correlations with visual acuity and differential light sensitivity of the areas located within 15 degrees from the fixation point. The correlation proved higher for foveal sensitivity expressed in non-logarithmic rather than in logarithmic units, the opposite being the case for the sensitivity of parafoveal areas. It may be concluded that critical frequency of photic driving is conditioned by the cortical projection zones and visual pathways corresponding to the central 15 degrees of the visual field, but with predominant role of foveal projections.
对患有视神经萎缩、中等程度表达的视交叉上病变的患者以及正常受试者进行了光驱动临界频率的研究。仅在视神经萎缩患者中出现了降低。光驱动临界频率与视力以及距注视点15度范围内区域的微分光敏感度显著相关。对于以非对数单位而非对数单位表示的中央凹敏感度，相关性更高，而对于中央凹旁区域的敏感度则相反。可以得出结论，光驱动临界频率受与视野中央15度相对应的皮质投射区和视觉通路的制约，但中央凹投射起主要作用。
