1. Contact lens pioneers: the early history of contact lenses;Schaeffer;Rev Optom,2007
2. History and development of contact lenses;Barr,2005
3. Contact lens optics and lens design;Douthwaite,2006
4. The history of contact lenses;Lamb,2019
5. ISO 18369-1:2017. Ophthalmic optics - Contact lenses. Part 1: Vocabulary, classification system and recommendations for labelling specifications. Geneva: International Organization for Standardization;2017.