Tolong jelaskan mengenai Bacaan lanjutan dari Lensa kontak

Efron, Nathan (2002). Contact Lens Practice. Elsevier Health Sciences. .

Heitz, Robert (2003, 2005 and 2014). "The History of Contact Lenses". In: Julius Hirschberg, History of Ophthalmology, vols. 11/3a, 11/3b, and 11/3c. Ostend, Belgium: Wayenborgh Publishing; Paraguay: Piribebuy. .