https://www.myalcon.co.uk/sites/g/files/rbvwei621/files/2019-05/aotx-fitting-guide---illustrative-purposes-only---needs-to-change.pdf
https://www.myalcon.co.uk/sites/g/files/rbvwei621/files/2019-05/aotx-fitting-guide---illustrative-purposes-only---needs-to-change.pdf
