动态等视线和静态光阈值测定都存在一定的波动性。不同时间检查,等视线位置和光阈值高低出现的离散称为长期波动。对于很多眼病,特别是青光眼的诊断、随访及其治疗效果的判断,定期复查视野是一必不可少的步骤。评价视野是否恶化或改善,首先应充分认识正常长期波动,否则就难以判断视野变化是属于正常波动,还是病 Dynamic isobaric and static light threshold measurements have some volatility. Check at different times, such as the location of the line of sight and light threshold appears discrete long-term fluctuations. For many eye diseases, especially glaucoma diagnosis, follow-up and treatment to determine the effect of regular review of vision is an essential step. To assess whether the visual field is deteriorating or improving, we should first fully understand the normal long-term fluctuations, otherwise it will be difficult to judge whether the visual field changes are normal fluctuations or not