Humanitarian Cross-Linking with Light for Sight in Tajikistan Mar 10, 2016 | Hafezi / ELZA Zurich / Switzerland (Headquarters), Noor / Teheran / Iran March 2016: Noor Eye Clinic, Teheran. Our Light for Sight reference site in Teheran brings hope to a young Down Syndrome patient with keratoconus from Tajikistan, through the medium of LfS headquarters in Switzerland . Read the article here.