• Cooperating Ophthalmologist attached to the Corneal Department of Athens University Eye Clinic having actively participated in its clinical, surgical and educational program, 1997 -2003.
• Clinical Fellow (Cornea, External Diseases and Refractive Surgery Fellowship, University of San Diego California (UCSD), School of Medicine, USA, 1995 -1996.
• Phd, Athens University, Opththalmology Division . Subject:"The contribution of Computerized Videokeratography to the study of Corneal Refractive Surgical Procedures." Degree "Excellent", 1999.
• Observership, attached to the Corneal Service of the Moorfields Eye Hospital in London, England 1993.
• Ophthalmology Residency: Division of Ophthalmology, Athens University Eye Clinic, 1991 – 1995.
• University of Athens, Medical School, Athens, Greece. Graduation degree "Excellent", 1987.
• Barbakion Master High School, Athens, Greece. Graduation degree "Excellent"

• Diplomate, European Board of Ophthalmology, EBOD, 1996.
• Alexander Onassis Foundation Scholarship, 1995 -1996.

• Phototherapeutic keratectomy in macular corneal dystrophy with recurrent erosions. D. Droutsas, G.Tsioulias et al. J Refract Surgery, vol. 12:293-294, February,1996.
• Keratoconus and tapetoretinal degeneration. M. Moschos, D. Droutsas, E. Panagakis, , G.Tsioulias, M. Tsalouki. Cornea15(5):473-476,1996.
• Clinical experience with cyanoacrylate tissue adhesive. M. Moschos, D. Droutsas, P. Bousalis , G.Tsioulias. Documenta Ophthalmologica 00: 1-9,1997.
• Regression and its mechanisms after laser in situ keratomileusis in moderate and high myopia. A. Chayet, K. Assil, M. Montes, M. Espinosa, A. Castellanos, G. Tsioulias. Ophthalmology, 1998;105:1194-1199.
• Arcuate relaxing incisions with a 5 mm optical zone for the correction of high post cataract astigmatism. G. Tsioulias, D. Droutsas, M. Mosschos, G. David, G. Theodossiadis. Acta Ophthalmologica. 2000; 214(6):385-9.
• The inheritance of the corneal macular dystrophy (Groenouw II) Greek Annals of Ophthalmology, Vol 2(29) - number 1, p. 53, March 1992.
• Corneal topography. Present and future. Droutsas D., Miltsakakis D., Tsioulias G., Klyce S. Greek Annals of Ophthalmology,1993.
• A retrospective study of fibrin reaction after ECCE in three groups of diabetic patients. Baltatzis S., Vergados J., Georgopoulos G.,Tsioulias G. Greek Annals of Ophthalmology,1995.

BOOKS and BOOK CHAPTERSRefraction basics and techniques, Damanakis Alexandros, 1999Author of the chapter “Surgical Correction of Ametropias”PRESENTATIONS:

• Central islands after PRK. S. Feldman, A. Castellanos, G. Tsioulias. ISRS, Chicago , USA, Oct. 24-26, 1996.
• Corneal topography and roughness in deepithelialized corneas using the Total Corneal Analyzer TCA TM, G. Tsioulias, Q. Zhou, et al, ARVO, Fort Lauderdale,, Florida, USA, April, 1996.
• The role of elevation maps in evaluating central topographic islands after PRK. G. Tsioulias, D. Droutsas, P. Arvanitis, A. Castellanos, S. Feldman, P. Theodossiadis. XIth Congress of European Society of Ophthalmology. Hungary, Budapest, June 1-5, 1997.
• Arcuate keratotomies with a 5mm optical zone for the correction of severe astigmatism. G. Tsioulias, D. Droutsas, G. David, G. Theodossiadis. Aegean Cornea IV, June 26-28, 1998, Santorini.
• Lasik for high post penetrating keratoplasty compound myopic astigmatism (case report) G. Tsioulias, D. Droutsas, G. David, G. Theodossiadis. 3rd ESCRS winter refractive surgery meeting and 13th symposium of the greek intraocular implant and refractive surgery society, Athens, Jan 1999.
• Limpal wedge resection for the correction of high against the rule postcataract astigmatism. G. Tsioulias, D. Droutsas, M. Apostolopoulos, G. Theodossiadis. 3rd ESCRS winter refractive surgery meeting and 13th symposium of the greek intraocular implant and refractive surgery society, Athens, Jan 1999.
• Arcuate astigmatic keratotomies as an alternatie to bitoric lasik for the correction of mixed astigmatism ( case report). G Tsioulias, S. Dirmilis, D. Droutsas, CH Eukarpidis, G. Theodosiadis. 14th International congress of the Hellenic society of introcular implant and refractive surgery. Athens 17-20 Febr, 2000.
• Bitoric Lasik for the correction of simple myopic astigmatism with the Nidek EC-5000 Excimer laser. G Tsioulias, S. D. Droutsas, J. Kotsiras, CH Eukarpidis, G. Theodosiadis. 14th International congress of the Hellenic society of introcular implant and refractive surgery. Athens 17-20 Febr, 2000.
• "Corneal graft rejection or non-immunologic corneal graft opacification ?" DROUTSAS D.,PANAGAKIS E.,PANAGIOTIDIS D.LIOKIS N.,TSIOULIAS G. 25th Panhellenic Ophthalmological Congress, Chalcidiki, Greece, June 1992.
• "The use of Cyclosporin-A in corneal grafting" DROUTSAS D.,TSIOULIAS G.,PANAGIOTIDIS D.,LIOKIS N., BOUSALIS P. Hellenic Ophthalmological Society meeting, Messologi, Greece, June 1992.
• "The use of the Karickhoff surgical keratometer" DROUTSAS D.,TSIOULIAS G.,PANAGIOTIDIS D.,LIOKIS N., BOUSALIS P. Hellenic Ophthalmological Society meeting, Messologi, Greece, June 1992.
• "Keratoplasty in cases of pseudophacic bullous keratopathy" DROUTSAS D.,BOUSALIS P.,TSIOULIAS G. et al.Ophthalmological Society of Western Greece,Sparta,Sept.1992.
• "Combination of a soft and a hard contact lens" DROUTSAS D.,BOUSALIS P.,TSIOULIAS G. et al.Ophthalmological Society of Western Greece,Sparta,Sept.1992.
• "Aetiology of the corneal graft failure" DROUTSAS D., PANAGIOTIDIS D.,TSIOULIAS G., BOUSALIS P.,LIOKIS N. 28th Panhellenic surgical congress and International Forum , Nov. 1992.
• "The advantages of corneal transplantation combined with cataract extraction (triple)"DROUTSAS D.,PANAGIOTIDIS D.,TSIOULIAS G.,LIOKIS N., BOUSALIS P.28th Panhellenic surgical congress and International Forum , Nov. 1992.
• "Corneal graft failure" DROUTSAS D.,TSIOULIAS G., BOUSALIS P., KOKOLAKIS ST. Second Congress of the European association of tissue banks, Athens, Greece, May 1993.
• "Surgical management (full thickness keratoplasty) in corneal disease" DROUTSAS D.,TSIOULIAS G., BOUSALIS P., TSOPELAS N. Second Congress of the European association of tissue banks, Athens, Greece, May 1993.
• "High risk penetrating keratoplasty in a corneal chemical burn (Video) DROUTSAS D.,TSIOULIAS G. et al. Second Congress of the European association of tissue banks, Athens, Greece, May 1993.
• "Full thickness keratoplasty combined with cataract extraction (triple)." DROUTSAS D.,TSIOULIAS G.et al. Second Congress of the European association of tissue banks, Athens, Greece, May 1993.(Video)
• "Use of Diode Laser during fluorescein angiography"TSOPELAS N., DROUTSAS D., RIGA F., BOUSALIS P., TSIOULIAS G. 1st South European Medical Laser Congress, Santorini, Greece, June 1993.
• "A retrospective study of fibrin reaction after ECCE in three groups of diabetic patients".Baltatzis S., Vergados J., Georgopoulos G.,Tsioulias G. Societas Ophthalmologica Mediterranea 3rd International Congress,Athens, April 1994.
• "Corneal topography after penetrating keratoplasty". DROUTSAS D.,TSIOULIAS G.et al. 20th Panhellenic Medical Congress,Athens May 1994.
• "PTK in a band keratopathy case" DROUTSAS D., LAMPROS J., KOTSIRAS J., TSIOULIAS G.20th Panhellenic Medical Congress,Athens, May 1994 (Poster)
• "Corneal topography (TMS-1) of the normal cornea" DROUTSAS D.,TSIOULIAS G.et al.27th Panhellenic Ophthalmological Congress, Chalcidiki,1994.
• "PTK in one case of corneal macular dystrophy" DROUTSAS D., TSIOULIAS G., KOTSIRAS J., KOUFALA C., LAMPROS J. Aegean cornea II, Rhodes,Oct. 1994.
• "Topographic analysis of keratoconus" DROUTSAS D., TSIOULIAS G., KOKOLAKIS S., THEODOSSIADIS G. 28th Panhellenic Ophthalmologic Congress,Athens,June 1995.
• "Computerized corneal topography pre-op and post-op in PRK following radial and astigmatic keratotomy"SYRBOPOULOS E., DROUTSAS D., TSIOULIAS G., THEODOSSIADIS G.28th Panhellenic Ophthalmological Congress, Athens,June 1995.
• "Computerized corneal topography pre-op and post-op after combined radial and astigmatic keratotomy"SYRBOPOULOS E., DROUTSAS D., TSIOULIAS G., THEODOSSIADIS G.Xth Congress European Society of Ophthalmology, Milano ,Italy,June 1995.
• "Corneal topographic changes after refractive surgery" DROUTSAS D., SYRBOPOULOS E., TSIOULIAS G., THEODOSSIADIS G. 28th Panhellenic Ophthalmologic Congress,Athens,June 1995.
• "Pseudophacic retinal detachments"BALTATZIS S., TSIOULIAS G., KOTSIRAS J.28th Panhellenic Ophthalmological Congress,Athens,June 1995.
• "PRK following radial and astigmatic keratotomy in highly myopic eyes"SYRBOPOULOS E., DROUTSAS D., TSIOULIAS G.,BOUSALIS P., THEODOSSIADIS G.Xth Congress European Society of Ophthalmology, Milano ,Italy,June 1995.
• "HLA matching in high risk penetrating keratoplasty"DROUTSAS D., TSOPELAS N., TSIOULIAS G., THEODOSSIADIS G.28th Panhellenic Ophthalmological Congress,Athens,June 1995(Poster).
• "Preoperative visual electophysiology for corneal transplantation"DROUTSAS D., MOSCHOS M., PANAGAKIS E., TSIOULIAS G., ARVANITIS P. XXXIII symposium, Athens, Greece,June 1995.
• "PTK in corneal opacities"DROUTSAS D., SYRBOPOULOS E., LAMPROPOULOS J., TSIOULIAS G., BOUSALIS P., THEODOSSIADIS G. Congress European Society of Ophthalmology, Milano ,Italy,June 1995.
• "Corneal topographic changes after sutureless cataract surgery"KOKOLAKIS S., TSIOULIAS G., ALEXIOU M.,DROUTSAS D.,THEODOSSIADIS G.Xth Congress European Society of Ophthalmology, Milano ,Italy,June 1995.
• "Aetiological management of corneal graft failure after penetrating keratoplasty". DROUTSAS D.,SYRBOPOULOS E., TSIOULIAS G.,BOUSALIS P., THEODOSSIADIS G. Xth Congress European Society of Ophthalmology, Milano ,Italy,June 1995.
• "Penetrating keratoplasty:A retrospective study of 560 cases concerning the preexisted corneal disease" DROUTSAS D.,SYRBOPOULOS E., TSIOULIAS G.,BOUSALIS P., THEODOSSIADIS G. Xth Congress European Society of Ophthalmology, Milano , Italy, June 1995.