1. Gündüz K. Vascular hamartomatous malformations. Symposium: Pediatric orbital tumors. XIII. Congress of the European Society of Ophthalmology, 3-7 June 2001, İstanbul, Turkey.
  2. Gündüz K. Course: Current management of uveal malignant melanoma. XIII. Congress of the European Society of Ophthalmology, 3-7 June 2001, İstanbul, Turkey.
  3. Gündüz K. Course: Retinoblastoma. XXIXth International Congress of Ophthalmology, 21-25 April 2002, Sydney, Australia.
  4. Gündüz K. Intraocular retinoblastoma. Symposium: Current Management of Intraocular Tumors. XIII. Afro Asian Congress of Ophthalmology, June 18-22 2004, İstanbul, Turkey.
  5. Gündüz K. Plaque radiotherapy. Symposium: Update on Uveal Melanoma. XXX. International Congress of Ophthalmology. XXVI Pan-American Congress of Ophthalmology, XVII Brazilian Congress of Prevention of Blindness, 19-24 February 2006, Sao Paolo, Brasil.
  6. Gündüz K. Intraocular tumors results of chemoreduction for retinoblastoma. Symposium: Update on Childhood Tumors. XXX. International Congress of Ophthalmology, XXVI Pan-American Congress of Ophthalmology, XVII Brazilian Congress of Prevention of Blindness, 19-24 February 2006, Sao Paolo, Brasil.
  7. Gündüz K. Diagnosis and focal treatment modalities of retinoblastoma. Symposium: Diagnosis and treatment of retinoblastoma. 5th International APOCP (Asian Pacific Organization for Cancer Prevention) Conference, April 3-7, 2010, İstanbul, Turkey.
  8. Gündüz K. Retinoblastoma experience at Ankara University. Symposium: Retinoblastoma follow-up results of Turkish Pediatric Oncology and Ocular Oncology Centers. 5th International APOCP (Asian Pacific Organization for Cancer Prevention) Conference, April 3-7, 2010, İstanbul, Turkey.
  9. Gündüz K. Ocular oncology in Middle East and Africa. Symposium: Middle East African Journal of Ophthalmology (MEAJO) symposium. American Academy of Ophthalmology and Middle East African Council of Ophthalmology 2010 Joint Meeting, October 16-19, 2010, Chicago, USA.
  10. Gündüz K. Presentation patterns and management of retinoblastoma at a tertiary care center in Turkey. Symposium: Retinoblastoma: Worldwide trends in detection and management. World Ophthalmology Congress 2012, XXXIII International Congress of Ophthalmology 2012, 12th MEACO International Congress, February 16-20, 2012, Abu Dhabi, United Arab Emirates.
  11. Gündüz K. Local resection in iris, ciliary body, and choroidal melanomas. Conference. The Egyptian Ophthalmological Society Annual Conference in Conjunction with the All India Ophthalmological Society and the Turkish Ophthalmological Society, March 14-16, 2012, Cairo, Egypt.
  12. Gündüz K. Fundus autofluorescence in choroidal melanocytic lesions. Conference. The Egyptian Ophthalmological Society Annual Conference in Conjunction with the All India Ophthalmological Society and the Turkish Ophthalmological Society, March 14-16, 2012, Cairo, Egypt.
  13. Gündüz K. Supra intra-arterial chemotherapy: Con. Symposium: Tumour: Melanoma, Retinoblastoma, Lymphoma. The 3rd World Congress on Controversies in Ophthalmology (COPHy), March 22-24, 2012, İstanbul, Turkey,
  14. Gündüz K. Treatment of vitreo-retinal lymphoma: In favor of other modalities (systemic chemotherapy and irradiation). Symposium: Tumour: Melanoma, Retinoblastoma, Lymphoma. The 3rd World Congress on Controversies in Ophthalmology (COPHy), March 22-24, 2012, İstanbul, Turkey.
  15. Gündüz K. Exo and endoresection in uveal melanoma. Symposium: Tumour. 16th Afro-Asian Congress of Ophthalmology and 5th Mediterranean Retina Meeting, June 13-16, 2012, Istanbul, Turkey.
  16. Gündüz K. Orbital pseudotumor: What you should know. APSOOP Symposium: Pseudo and Paraneoplastic Entities. The 9th International Symposium of Ophthalmology, November 9-11, 2013, Guangzhou, China.
  17. Gündüz K. Local resection in iris, ciliary body, and choroidal melanomas. International Society of Ocular Oncology Symposium. The 9th International Symposium of Ophthalmology, November 9-11, 2013, Guangzhou, China.
  18. Gündüz K. Management of small choroidal melanocytic tumors. Round Table Discussion: Management of small choroidal melanocytic lesions. Moderator: Carol Shields. Panel members: Tero Kivela, Stefan Seregard, Leonidas Zografos, Shahar Frenkel, Timothy Murray, Kan Gunduz. Intenational Society of Ocular Oncology (ISOO) 2015 Meeting, 16-19 June 2015, Paris, France.
  19. Gündüz AK. Transretinal biopsy in the diagnosis of choroidal melanoma. Session: Uveal Melanoma: Diagnosis and Management. XIII. International Congress of the Middle East Africa Council of Ophthalmology, 4-8 May 2016, Bahrain.
  20. Gündüz AK. Transpupillary thermotherapy and photodynamic therapy. Session: Uveal Melanoma: Diagnosis and Management. XIII. International Congress of the Middle East Africa Council of Ophthalmology, 4-8 May 2016, Bahrain.
  21. Gündüz AK. Overview of management of uveal malignant melanoma. Session: Intraocular Tumors. 5th EGVRS (Egyptian Vitreoretinal Society) Training School, 24-27 October 2016, Cairo, Egypt.
  22. Gündüz AK. Transretinal biopsy for choroidal melanoma. Session: Intraocular Tumors. 5th EGVRS (Egyptian Vitreoretinal Society) Training School, 24-27 October 2016, Cairo, Egypt.
  23. Gündüz AK. OCTA in choroidal and retinal tumors. Course: OCT and OCT-A in choroidal and retinal tumors. American Academy of Ophthalmology 2019 Annual Meeting, October 12-15, 2019, San Francisco, USA.
  24. Gündüz AK. Retinal tumors: Modern diagnosis and treatment. Ocular Oncology Conference (Virtual meeting). March 27, 2021.