Snyder A C, Schoessler J P
Am J Optom Physiol Opt. 1983 Oct;60(10):830-8. doi: 10.1097/00006324-198310000-00004.
Human corneal thickness was measured during daily wear of hydrogel contact lenses and then during the initial 2 weeks extended wear of hyper-thin (0.035 mm), low water content (38.6%), hydrogel lenses (polymacon). Results show that subjects wearing standard thickness (0.12 mm) and ultra-thin (0.07 mm) hydrogel lenses of low water content for daily wear will exhibit a diurnal swelling of the cornea. Subjects wearing hyper-thin (0.035 mm) low minus power hydrogel contact lenses of low water content for extended wear will exhibit overnight (closed eye) swelling of the cornea followed by a deswelling throughout the day (open eye). The degree of swelling and deswelling can vary greatly among individual subjects.
在水凝胶隐形眼镜日常佩戴期间以及随后超薄（0.035毫米）、低含水量（38.6%）水凝胶镜片（聚甲基丙烯酸羟乙酯）延长佩戴的最初2周内，对人角膜厚度进行了测量。结果显示，佩戴标准厚度（0.12毫米）和超薄（0.07毫米）低含水量水凝胶镜片进行日常佩戴的受试者，角膜会出现昼夜肿胀。佩戴超薄（0.035毫米）、低含水量、低负度数水凝胶隐形眼镜进行延长佩戴的受试者，角膜会在夜间（闭眼时）肿胀，随后在白天（睁眼时）消肿。不同个体受试者的肿胀和消肿程度差异可能很大。
