Regional Institute of Ophthalmology (RIO), Kolkata invites the 3rd call e-Tender for supply of Foldable Multipiece Lens IOL from Indian and foreign manufacturers, importers, agents and authorized distributors. Memo No.: RIO-2026/726 Bid Closing Date: 20.08.2026, 6:00 PM Contact Details: Director, Regional Institute of Ophthalmology, MCH Campus, Kolkata-700073 Website: http://riokolkata.in Tender Portal: https://wbtenders.gov.in