Tsuchiya K, Ukai K, Ishikawa S
Department of Ophthalmology, School of Medicine, Kitasato University, Kanagawa, Japan.
Ophthalmic Physiol Opt. 1989 Oct;9(4):385-91.
The study examines the effect of a near task on immediate post-task measures of pupil size and accommodative state. The method of quasistatic measurement of accommodation was used and pupillary changes elicited by the accommodative stimulus were simultaneously recorded using an infrared video-pupillometer. This method requires a short (typically 2 minutes) but strong (up to 10 D in most subjects) near-vision effort, with the accommodative and pupillary responses being recorded before, during, and after the task. The results show pupil after-effects to be more pronounced than tonic accommodative after-effects. Inter-individual difference in after-effects is large. The pupil after-effect was dissociated from the tonic accommodation after-effect and lasted in some cases for more than 15 minutes. The pupil after-effect was not masked by darkness. It is proposed that monitoring the changes of pupil is valuable when assessing the after-effects of sustained near vision.
该研究考察了一项近距任务对任务后即刻瞳孔大小和调节状态测量值的影响。采用了调节的准静态测量方法，并使用红外视频瞳孔计同时记录调节刺激引起的瞳孔变化。这种方法需要短时间（通常为2分钟）但高强度（大多数受试者高达10 D）的近视力努力，同时在任务前、任务期间和任务后记录调节和瞳孔反应。结果表明，瞳孔后效应比紧张性调节后效应更明显。个体间后效应的差异很大。瞳孔后效应与紧张性调节后效应分离，在某些情况下持续超过15分钟。瞳孔后效应不会被黑暗掩盖。有人提出，在评估持续近视力的后效应时，监测瞳孔变化是有价值的。
