16^th Asia-Pacific Vitreo-Retina Society Congress, Hong Kong, December 2023

  8^th Asia Pacific Tele-Ophthalmology Society, Patayya, Tailand, December. 2023

41^st Congress of the European Society of Cataract and Refractive Surgery, Viena, Sep. 2023

   38^th Congress of the Asia-Pacific Academy of Ophthalmology, Bangkok, Feb. 2023

   15^th Asia-Pacific Vitreo-Retina Society Congress, Taipei, Nov. 2022

26^th Winter Congress of the European Society of Cataract and Refractive Surgery, Held Virtually, Feb.2022

6^th Asia Pacific Tele-Ophthalmology Society, Held Virtually, August. 2021

47^th Congress of the American Society of Cataract and Refractive Surgery, Las Vegas, Nevada, May. 2021

Annual Meeting of American Academy of Ophthalmology (AAO), Held Virtually, Nov. 2020

38^th Congress of the European Society of Cataract and Refractive Surgery, Held Virtually, Oct. 2020

World Ophthalmology Congress, South Africa, June. 2020

46^th Congress of the American Society of Cataract and Refractive Surgery, Held Virtually, May. 2020

24^th Winter Congress of the European Society of Cataract and Refractive Surgery, Marrakesh, Feb. 2020

1^th Asia Pacific Ocular Imaging Society Meeting, Singapore, Jan. 2020

34^th Congress of the Asia-Pacific Academy of Ophthalmology, Bangkok, March. 2019

36^th Congress of the European Society of Cataract and Refractive Surgery, London, Sep.2018

44^th Congress of the American Society of Cataract and Refractive Surgery, Washington DC, April. 2018

43^rd Congress of the American Society of Cataract and Refractive Surgery, Los Angeles, May. 2017

34^th Congress of the European Society of Cataract and Refractive Surgery, London, Sep. 2016

42^nd Congress of the American Society of Cataract and Refractive Surgery, New Orleans, May 2016

33^rd Congress of the European Society of Cataract and Refractive Surgery, Barcelona, Sep. 2015

Annual Cornea Day (Organized by ESCRS and EuCornea), Feb. 2015. 5^th EUCornea Congress, London, Sep. 2014

32^th Congress of the European Society of Cataract and Refractive Surgery, London, Sep. 2014

World Ophthalmology Congress, Tokyo, April. 2014

1^th Iranian Congress of Spiritual Safety 2013, Shahid Beheshti University of Medical Sciences, Tehran, Dec. 2014

31^th Congress of the European Society of Cataract and Refractive Surgery, Amsterdam, Oct. 2013

30^th Congress of the European Society of Cataract and Refractive Surgery, Milan, Sep. 2012

29^th Congress of the European Society of Cataract and Refractive Surgery, Vienna, Sep. 2011

1^th to 26^th Iranian Congress of Ophthalmology, Tehran, 1990-2016

27^th Congress of the European Society of Cataract and Refractive Surgery, Barcelona, Sep. 2009

25^th Congress of the European Society of Cataract and Refractive Surgery, Stockholm, Sep. 2007 

24^th Congress of the European Society of Cataract and Refractive Surgery, London, Sep. 2006

23^th Congress of the European Society of Cataract and Refractive Surgery, Lisbon, Sep. 2005

22^th Congress of the European Society of Cataract and Refractive Surgery, Parisn, France, Sep. 2004

6^th Annual NIDEK International Excimer Laser Symposium, Rio De Janeiro, Brazil, Dec. 2000