Hellow guys, Welcome to my website, and you are watching The Diffractive Bifocal and Multifocal IOLs - how do they work - The Science and the Physics.. and this vIdeo is uploaded by Prof.Venkatesh - Dr Suvira at 2022-08-08T05:37:00-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.