Subbaraman , Lakshman N., Lyndon W. Jones, and Jacek Pniewski. 2014. “Measuring Friction and Lubricity of Soft Contact Lenses: A Review”. OphthaTherapy. Therapies in Ophthalmology 1 (3), 197-201. https://journalsmededu.pl/index.php/ophthatherapy/article/view/690.