Christianson M D, Parker J A, Arndt J
Can J Ophthalmol. 1977 Oct;12(4):300-3.
The identify the population at risk of permanent visual impairment from injuries associated with spectacles, we analysed 446 cases of penetrating ocular injury occurring over a ten year period. Sixteen injuries (3.6%) were due to spectacles; 40% of these were adult male amateur athletes. We used the drop-ball test to determine the important factors in the resistance to impact of 177 used spectacle lenses (29 plastic C39, 40 heat-tempered glass, 108 non-tempered glass). We found that material and thickness were the most important. The plastic lenses were the most impact resistant and non-tempered glass lenses the least, with heat-tempered glass lenses falling between. Plastic lenses of adequate centre thickness mounted in plastic frames are recommended for all children and all adults involved in athletics.
为了确定因眼镜相关损伤而面临永久性视力损害风险的人群，我们分析了十年间发生的446例穿透性眼外伤病例。其中16例损伤（3.6%）是由眼镜所致；这些损伤中40%的患者为成年男性业余运动员。我们使用落球试验来确定177片用过的眼镜镜片（29片塑料C39镜片、40片热钢化玻璃镜片、108片非钢化玻璃镜片）抗冲击的重要因素。我们发现材料和厚度是最重要的因素。塑料镜片抗冲击性最强，非钢化玻璃镜片抗冲击性最弱，热钢化玻璃镜片的抗冲击性介于两者之间。建议所有参与体育运动的儿童和成年人佩戴中心厚度合适、安装在塑料镜框中的塑料镜片。
