Alexandridis E, Manner M
Albrecht Von Graefes Arch Klin Exp Ophthalmol. 1977 May 23;202(3):175-80. doi: 10.1007/BF00407866.
Pupillary function was tested in 3 different age groups (20-30, 40-50, 60-70 years) of 8 patients each. The pupillary response was picked up by means of a portable IR-reflex-pupillometer, which registered the consensual pupillary light reflex in one eye, while the other eye was stimulated by flashes of different frequencies. Measurements were made of how many Hertz (Hz) the pupil dilated in the dark phases (intervals) between the flashes (flicker-fusion frequency). In the younger age group an average value of 3.15 Hz was obtained, the middle group fused at 2.89 Hz, the older group at 2.61 Hz. These differences are explained mainly by muscular and vascular degeneration of the iris.
对8名患者的3个不同年龄组（20 - 30岁、40 - 50岁、60 - 70岁）进行了瞳孔功能测试。瞳孔反应通过便携式红外反射瞳孔计采集，该仪器记录一只眼睛的同感性瞳孔光反射，同时用不同频率的闪光刺激另一只眼睛。测量了在闪光之间的黑暗阶段（间隔）瞳孔扩张的赫兹数（Hz）（闪烁融合频率）。在较年轻的年龄组中，获得的平均值为3.15Hz，中年组为2.89Hz，老年组为2.61Hz。这些差异主要由虹膜的肌肉和血管退变来解释。
