Prof. Dr. Okan Toygar

Articles published in international peer-reviewed journals (SCI & SSCI & Arts and Humanities) 

1.    Yabas Kiziloglu O, Coskun Y, Guven NE, Toygar O. Macular thickness in children aged 3-6 years born preterm. J AAPOS 2020:24(1):12.e1-12.e5. doi:10.1016/j.jaapos.2019.09.018. 

2.    Toygar O, Mestanoglu M, Riemann CD. Intraoperative ocular manometry in
silicone oil-filled eyes with a Boston type 1 keratoprosthesis. Retina 2019;39(11):2155-2160. doi: 10.1097/IAE.0000000000002269.

3.    Yabas Kiziloglu O, Mestanoglu M, Totuk Gedar OM, Adiguzel C, Toygar O. Recurrence of acute lymphoblastic leukemia manifesting as serous retinal detachments and optic disc swelling. Int Ophthalmol 2018;38(4):1791-1795. doi: 10.1007/s10792-017-0648-6.2017.

4.    Toygar B, Kızıloğlu ÖY, Toygar O, Hacımustafaoğlu M. Clinical outcomes of a new diffractive multifocal intraocular lens. Int J Ophthalmol 2017;10(12):1844-1850. doi: 10.18240/ijo.2017.12.09.

5.    Toygar O, Mi CW, Miller DM, Riemann CD. Reply to the comment on "Outcomes of transconjunctival sutureless 27-gauge vitrectomy with silicone oil infusion". Graefes Arch Clin Exp Ophthalmol 2016;254(11):2283 doi: 10.1007/s00417-016-3449-0.

6.    Toygar O, Guess MG, Youssef DS, Miller DM. Long term outcomes of intravitreal bevacizumab therapy for subretinal neovascularization secondary to idiopathic macular telangiectasia type 2. Retina 2016; 36(11):2150-2157 doi: 10.1097/IAE.0000000000001035.

7.    Toygar O, Mi CW, Miller DM, Riemann CD. Outcomes of transconjunctival sutureless 27-gauge vitrectomy with silicone oil infusion. Graefes Arch Clin Exp Ophthalmol 2016; 254(11):2111-2118. doi: 10.1007/s00417-016-3355-5. 

8.    Toygar B, Kızıloğlu ÖY, Toygar O, Hacımustafaoğlu M. Early clinical outcome with a new monofocal microincision intraocular lens. Int Ophthalmol 2016;36(5):657-64. doi: 10.1007/s10792-016-0178-7.

9.    Toygar O, Snyder ME, Riemann CD. Pars plana vitrectomy through a custom flexible iris prosthesis. Retina 2015;36(8):1474-9. doi: 10.1097/IAE.0000000000000959. 

10.    Toygar O, Snyder ME, Riemann CD. Dangling lens phacoemulsification; a novel technique for near complete zonular dehiscence. J Refract Surg 2015;31(12):835-838. doi: 10.3928/1081597X-20151111-10.

11.    Toygar O, Riemann CD. Intraoperative optical coherence tomography in macula involving rhegmatogenous retinal detachment repair with pars plana vitrectomy and perfluoron. Eye(Lond) 2016; 30(1):23-30. doi: 10.1038/eye.2015.230.

12.    Toygar O, Berrocal MH, Charles M, Riemann CD. Next generation dual bore cannula for injection of vital dyes and heavy liquids during pars plana vitrectomy. Retina 2015;36(3):582-587. doi: 10.1097/IAE.0000000000000747.

13.    Toygar B, Yabas Kiziloglu O, Toygar O, Aykan U. Spontaneous haptic flexion and misalignment of a new microincisional aspheric intraocular lens in the early postoperative period in two patients. J Refract Surg 2015;31(8):558-560. doi: 10.3928/1081597X-20150728-01.

14.    Toygar O, Sızmaz S, Pelit A, Toygar B, Yabaş Kızıloğlu Ö, Akova Y. Central corneal thickness in type II diabetes mellitus: Is it related with the severity of diabetic retinopathy? Turk J Med Sci 2015;45(3):651-654. doi: 10.3906/sag-1404-153.

15.    Toygar HU, Toygar O, Guzeldemir E, Cilasun U, Nacar A, Bal N. Alport syndrome: significance of gingival biopsy in the initial diagnosis and periodontal evaluation after renal transplantation. J Appl Oral Sci 2009;17(6): 623-629. doi: 10.1590/s1678-77572009000600016.

16.    Reyhan M, Toygar O, Sukan A, Seydaoglu G, Bakıner O.S, Aydın M, Yapar A.F, Aktaş A. 99mTc(V)-DMSA SPECT for the assessment of disease activity in Graves ophthalmopathy. Nucleer Medicine Communications 2007;28(10):775-781. doi: 10.1097/MNM.0b013e3282e7d746.

17.    Göksel B, Yerdelen D, Karataş M, Pelit A, Demircioğlu YZ, Kızılkılıç O, Tan M, Toygar O. Abducens nerve palsy and optic neuritis as an initial manifestation in brucellosis.  Scand J Infect Dis 2006; 38(8):721-725. doi: 10.1080/00365540500466614.

18.    Bavbek T, Yenice Ö, Toygar O. Problems with attempted chorioretinal venous anastomosis by laser for nonischemic CRVO and BRVO. Ophthalmologica 2005; 219(5): 267-271. doi: 10.1159/000086109.

Articles published in other international peer-reviewed journals

1.    Yabas Kiziloglu O, Toygar O, Toygar B, Hacimustafaoglu AM. Optic Nerve Head Parameters Measured with Spectral-Domain Optical Coherence Tomography in Healthy Turkish Children: Normal Values, Repeatability, and Intraocular Symmetry. Neuro-Ophthalmology 2017; 42(2):83-89. doi: 10.1080/01658107.2017.1349806.

2.    Gedar Totuk OM, Toygar O, Cosan F, Yabas Kiziloglu O, Toygar B. Coexistence of bilateral multifocal retinal pigment epithelial detachment and ankylosing spondylitis. Mod Rheumatol Case Reports 2017: 1:2, 64-67. doi: 10.1080/24725625.2017.1299670.

3.    Sisk RA, Toygar O. Full thickness macular hole formation after internal limiting membrane peeling: Beware the “omega sign”. Case Rep Ophthalmol Med 2016:2016;9858291. doi: 10.1155/2016/9858291.

4.    Sadaka A, Sisk RA, Osher JM, Toygar O, Duncan MK, Riemann CD. Intravitreal methotrexate infusion for proliferative vitreoretinopathy. Clin Ophthalmol 2016:19;10:1811-1817. doi: 10.2147/OPTH.S111893.

5.    Wise J, Toygar O, Corrêa ZM, Miller DM, Sisk R. Subretinal cannulation as a complication of suture trabeculotomy surgery in a pediatric patient. Retinal Cases and Brief Reports 2017;11(1):79-82. doi: 10.1097/ICB.0000000000000294.

Papers presented at international scientific meetings and published in the proceedings book 

1. Toygar B, Yabas Kızıloglu O, Besli B, Kaya I, Hacımustafaoğlu AM, Toygar O. Refractive outcomes and visual performance after implantation of a trifocal toric intraocular lens. 36 th ESCRS, 22-26 September 2018, Vienna. Poster presentation.

2. Toygar O, Mestanoglu M, Rieman CD. Intraoperative ocular manometry in silicon oil filled eyes with Boston Type 1 keratoprosthesis. 18th Euretina, 20-23 September 2018, Vienna, Austria. Oral presentation. Proceedings CD. Presented by Riemann.

3. Toygar B, Mestanoglu M, Yabas Kızıloglu O, Toygar O. Corneal superficial stromal opacification and surface irregularity treated with excimer laser phototherapeutic keratectomy. 22 th ESCRS Winter Meeting, 9-11 February 2018, Belgrade, Serbia. Oral presentation.

4.    Mestanoglu M, Gedar Totuk OM, Yabas Kızıloglu O, Toygar O, Toygar B. Reproducibility and agreement of optical biometry measurements obtained by new swept-source optical coherence tomography–based optical biometer and a time-domain optical coherence tomography–based optical biometer22 th ESCRS Winter Meeting, 9-11 Şubat 2018, Belgrad, Sırbistan. Sözlü bildiri. 

5. Toygar O, Mi CW, Miller DM, Riemann CD. Outcomes of transconjunctival sutureless 27-gauge vitrectomy with silicone oil infusion. 16th Euretina, 8-11 September 2016, Copenhagen, Denmark. Oral presentation.

6.    Toygar O, Snyder ME, Riemann CD. Pars plana vitrectomy through a custom flexible iris prosthesis. 16th Euretina, 8-11 Eylül 2016, Kopenhag, Danimarka. Poster sunumu.

7. Toygar O, Guess MG, Youssef DS, Miller DM. Long term outcomes of intravitreal bevacizumab therapy for subretinal neovascularization secondary to idiopathic macular telangiectasia type 2. 16th Euretina, 8-11 September 2016, Copenhagen, Denmark. Poster presentation.

8. Riemann CD, Toygar O. Intraoperative OCT reveals submacular fluid during macula involving rhegmatogenous retinal detachment with pars plana vitrectomy and perfluoro-n-octane. 15th Euretina, 17-20 September 2015, Nice, France. Oral presentation.

9.    Toygar O, Riemann CD. Next generation dual bore cannula for injection of vital dyes and heavy liquids during pars plana vitrectomy. 15th Euretina, 17-20 Eylül 2015, Nice, Fransa. Sözlü bildiri.

10. Toygar B, Yabas Kızıloglu O, Hacımustafaoglu AM, Toygar O. Early clinical experience with a new trifocal intraocular lens. 33th Congress of the ESCRS. 5-9 September 2015, Barcelona, Spain. Poster. 

11. Toygar B, Yabas Kızıloglu O, Toygar O, Hacımustafaoglu AM. Early experience with a new diffractive refractive multifocal intraocular lens. 33th Congress of the ESCRS 5-9 September 2015, Barcelona, Spain. Poster. 

12.    Yabas Kızıloglu O, Toygar O, Toygar B, Hacımustafaoglu AM. Retinal nerve fiber layer thickness in healthy children measured with spectral domain optical coherence tomography. 3rd WSPOS Congress, 4-6 Eylül 2015, Barselona, İspanya. Poster.

13.    Toygar B, Toygar O, Yabas Kiziloglu O, Aykan U. Spontaneous haptic malposition of a new single piece, 4-point fixation haptic design, microincisional hydrophobic acrylic IOL in 2 eyes of 2 patients: case series. XIX ESCRS Winter Meeting, 20-22 Şubat 2015, Istanbul. Poster

14.    Toygar B, Toygar O, Yabas Kiziloglu O, Hacımustafaoğlu A, Keskinbora K. Early experience with a new toric IOL for correction of astigmatism in cataract surgery. XXXII. Congress of the ESCRS, 13-17 Eylül 2014, Londra. Poster.

15.    Reyhan M, Bakıner OS, Toygar O, Sükan A, Aydın M, Yapar FA.  Tc-99m V-DMSA SPECT for the diagnosis of active Graves’ ophthalmopathy. EANM(Avrupa Nükleer Tıp Kongresi) Eylül 2006. Atina/Yunanistan. Sözlü bildiri.

16. Yaycıoğlu R, Pelit A, Toygar O, Akova YA. Comparison of 2 methods of central corneal thickness. ASCRS congress, 17-22 March 2006, San Francisco/USA. Oral presentation. 

17.    Bilen A, Adıbelli F, Toygar O, Acil M, Yalcintas D, Turkoz A. Effects of propofol and remifentanil in topical anesthesia or retrobulbar block for cataract surgery. 24. ESRA (Avrupa rejional anestezi) kongresi.  Ekim 2005, Berlin/Almanya. Poster.

18. Pelit A, Canan H, Yaycıoğlu R, Toygar O, Adıbelli F, Akova YA. One year results of single-piece hydrophilic acrylic IOLs. 22nd ESCRS congress. 18-22 September 2004. Paris/France. Oral presentation 

19. Toygar O, Adıbelli F, Canan H, Pelit A, Yaycıoğlu R, Akkoyun I, Akova YA. Intravitreal triamcinolone acetonide for macular edema. Mediterranean Retina Meeting (European Vitreoretinal Society Satellite Meeting). 25-27 June 2004. Antalya/Türkiye. Oral presentation.

20.    Toygar B, Atasoy M, Toygar O. Operating on a refractive surgeon with his own laser and microkeratome system. 20. ESCRS kongresi. 7-11 Eylül 2002/ Nice, Fransa. Video sunumu.

21. Toygar B, Toygar O. Bitoric LASIK for the correction of mixed astigmatism. 19th ESCRS congress. 1-5 September 2001. Amsterdam/Netherlands. Oral presentation.

22.    Toygar O, Öğüt MS, Kazokoğlu H. Autorefractometer measurements without cycloplegia; Does it give an acceptable accuracy in children. 13. Congress of European Society of Ophthalmology.  3-7 Haziran 2001. İstanbul/Türkiye. Sözlü bildiri.

23.    Toygar O, Öğüt MS, Kazokoğlu H.  Vision screening in school children in Istanbul. 13. Congress of European Society of Ophthalmology. 3-7 Haziran 2001. İstanbul/Türkiye. Sözlü bildiri.

24.    Öğüt MS, Toygar O, Kazokoğlu H. Prevalence of amblyopia, the role of families socio-economic power and education level. 13. Congress of European Society of Ophthalmology. 3-7 Haziran 2001. İstanbul/Türkiye. Poster.

Articles published in national peer-reviewed journals 

1.    Toygar O, Çekiç O. Eales Hastalığı. Güncel Retina. 2023;7(3):219-224. Doi: 10.37783/CRJ-0365.

2.    Toygar B, Yabaş Kızıloğlu Ö, Toygar O, Hacımustafaoğlu AM. Clinical outcomes of a new aspheric monofocal intraocular lens. Beyoğlu Eye Journal 2018.

3.    Yabas Kızıloğlu Ö, Toygar O, Toygar B, Hacımustafaoğlu AM. Retinal nerve fiber layer and macula thickness with spectral domain optical coherence tomography in children: normal values, repeatability and the influence of demographic and ocular parameters. Turkiye Klinikleri J Ophthalmol 2017; doi:10.5336/ophthal.2016-53972. 

4. Toygar O, Akçay L, Yabaş Kızıloğlu O, Toygar B, Yapıcıer O, Demir MK. A rare orbital neoplasm: solitary fibrous tumor. Türkiye Klinikleri J Ophthalmol. 2017:26(3):219-22. doi: 10.5336/ophthal.2015-46936. 

5. Adıbelli FM, Toygar O, Göncü T, Akal A, Dağlıoğlu MC, Taşkın İ. The Role of Optical Coherence Tomography in the Differential Diagnosis of Bilateral Optic Disc Drusen and Papilledema: Three Cases. Mustafa Kemal Üniversitesi Tıp Dergisi 2015;6(23):42-47. 

6. Toygar O, Akçay L, Toygar B, Yabaş Kızıloğlu O, Hacımustafaoğlu AM. Iris Reconstruction Lens Implantation in a Case of Traumatic Partial Aniridia. Glokom – Katarakt 2014; 9: 65-68. 

7.    Toygar O, Sızmaz S, Altan-Yaycıoğlu R, Adıbelli F, Canan H, Pelit A, Akova YA. Intravitreal triamcinolone acetonide as a treatment for diffuse diabetic macular edema. Annals of Medical Sciences 2008;17:11-15.

8.    Toygar O, Yaycıoğlu R, Sızmaz S, Canan H, Adıbelli F, Pelit A, Akova YA.  Graves hastalarında gözyaşı fonksiyonları. T Oft Gaz. 2007; 37: 211-215.

9. Toygar O, Pelit A, Bolat F, Akova YA. A case of orbital mucormycosis without diabetic ketoacidosis. T Oft Gaz. 2007; 37: 51-55.  

10. Canan H, Pelit A, Yaycıoğlu R, Toygar O, Adıbelli F, Akova YA. Posterior capsule opacification; one-year clinical results of cases implanted with a single-piece hydrophilic intraocular lens. T Oft Gaz 2006; 36: 234-238. 

11. Yaycıoğlu R, Pelit A, Toygar O, Akova YA. Investigation of the correlation between ocular parameters, intraocular pressure and the refractive power of the eye. T Klin Oftalmoloji. 2006; 15:54-60.

12. Yaycıoğlu R, Toygar O, Akova YA. Coexistence of Retinitis Pigmentosa and Fuchs Heterochromic Uveitis. MN Medikal Network. 2006; 13(1): 71-72.  

13. Toygar O, Pelit A, Kızılkılıç O, Akova YA. Indirect carotid-cavernous fistula - case report. T Oft Gaz. 2005; 35: 437-442. 

14. Toygar B, Toygar O. Clear lens extraction and intraocular lens implantation in high myopia. T Oft Gaz. 2003; 33: 786-790. 

15. Toygar O, Öğüt MS, Kazokoğlu H. Results of eye screening in primary school-age children in Istanbul. T Oft Gaz. 2003; 33: 585-591.  

16. Toygar O, Toker E, Öğüt MS. Congenital ptosis cases treated with frontalis suspension using allogeneic fascia lata. T Oft Gaz. 2000; 30: 220-224. 

17. Bozkurt N, Kazokoğlu H, Toygar O, Tuğlular S, Özener Ç, Ağaoğlu FÇ. Bilateral papillitis in tubulointerstitial nephritis-uveitis (TINU) syndrome. T Oft Gaz. 1999; 29: 81-85.

18. Toygar O, Öğüt MS. Results of the Jensen procedure in acquired sixth nerve palsy. T Oft Gaz. 1998; 28: 346-350.   

Papers presented at national scientific meetings and published in the proceedings book 

1. Toygar O, Yabaş Kızıloğlu Ö, Coskun Y, Güven NE. Macular thickness in preterm-born children aged 3-6 years. TOD 52nd National Congress, Antalya, 13-18 November 2018. Poster.

2. Gedar Totuk ÖM, Mestanoğlu M, Yarıktaş A, Toygar B, Toygar O. Comparison of swept source optical coherence tomography and partial coherence interferometry optical coherence tomography methods in biometric measurement of intraocular anatomical structures before cataract surgery. TOD 51st National Congress, Antalya, 24-29 October 2017. Poster.

3. Toygar O, Sadaka A, Sisk RA, Osher JM, Duncan MK, Riemann CD. Intravitreal methotrexate infusion in proliferative vitreoretinopathy. TOD 50th National Congress, Antalya, 9-13 November 2016. Oral presentation.

4. Toygar B, Yabaş Kızıloğlu Ö, Toygar O, Hacımustafaoğlu AM. Early clinical results in a case series implanted with a new trifocal intraocular lens following cataract surgery. TOD 49th National Congress, Istanbul, 4-8 November 2015. Oral presentation.

5. Yabaş Kızıloğlu Ö, Toygar O, Toygar B, Hacımustafaoğlu AM. Measurement of retinal nerve fiber layer thickness with spectral domain optical coherence tomography in the pediatric age group. TOD 49th National Congress, Istanbul, 4-8 November 2015. Oral presentation.

6. Bozkır MD, Adıbelli FM, Toygar O, Dağlıoğlu MC. Comparison of Multidiode Laser DSR Results of the First Cases Without Mitomycin and Later Cases With Mitomycin. TOD 48th National Congress, Antalya, 5-9 November 2014. Oral presentation.

7. Toygar O, Akçay L, Yabas Kiziloglu O, Toygar B, Yapicier O, Demir MK. Orbital solitary fibrous tumor. TOD 48th National Congress, Antalya, 5-9 November 2014. Poster.

8. Toygar O, Akçay L, Toygar B, Yabaş Kızıloğlu O, Hacımustafaoğlu A. Iris Reconstruction Lens Implantation in a Case of Traumatic Partial Aniridia. TOD 47th National Congress, Antalya, 6-10 November 2013. Poster. 

9. Toygar O, Yaycıoğlu R, Canan H, Pelit A, Adıbelli F, Sızmaz S, Akova YA. Tear functions in inactive thyroid ophthalmopathy cases. TOD 40th National Ophthalmology Congress. 28 October-1 November 2006/Antalya. Oral presentation

10. Toygar O, Pelit A, Bolat F, Akova YA. A case of orbital mucormycosis without diabetic ketoacidosis. TOD 40th National Ophthalmology Congress. 28 October-1 November 2006/Antalya. Poster

11. Canan H, Pelit A, Yaycıoğlu R, Toygar O, Adıbelli F, Akova YA. Posterior capsule opacification; one-year clinical results of cases implanted with a single-piece hydrophilic intraocular lens. TOD 39th National Ophthalmology Congress. 17-21 September 2005/Antalya. Poster. 

12. Toygar O, Adıbelli F, Canan H, Pelit A, Yaycıoğlu R, Akkoyun İ, Akova YA. Intravitreal triamcinolone acetonide treatment in macular edema. TOD 38th National Ophthalmology Congress. 9-13 October 2004/Antalya. Oral presentation. 

13. Toygar O, Yaycıoğlu R, Akova YA. Coexistence of retinitis pigmentosa and Fuchs heterochromic uveitis; due to a case. TOD 38th National Ophthalmology Congress. 9-13 October 2004/Antalya. Poster.

14. Toygar B, Toygar O. Cristalens (AT-45) Accommodative intraocular lens implantation. TOD 37th National Ophthalmology Congress. 4-8 October 2003/Istanbul. Oral presentation. 

15. Toygar O, Şahin Ö, Toker E, Bavbek T, Kazokoğlu H. Demographic characteristics and clinical appearance in Behçet patients. TOD 34th National Ophthalmology Congress. 30 September-4 October 2000/Antalya. Poster.

16. Bavbek T, Toygar O, Kazokoğlu H. Complications in retinal vein occlusion cases treated with laser chorioretinal venous anastomosis. TOD 33rd National Ophthalmology Congress. 2-6 October 1999/Izmir. Poster.

17. Toygar O, Toker E, Öğüt MS. Results of ptosis surgery performed with frontalis suspension using fascia lata. TOD 32nd National Ophthalmology Congress. 15-20 September 1998/Bursa. Oral presentation. 

18. Toygar O, Bozkurt N, Kazokoğlu H, Tuğlular S, Özener Ç. Bilateral papillitis in tubulointerstitial nephritis-uveitis (TINU) syndrome. TOD 32nd National Ophthalmology Congress. 15-20 September 1998/Bursa. Poster.

19. Toygar O, Bozkurt N, Kazokoğlu H. “Pulse” steroid therapy in optic neuropathy. TOD 20th Winter Symposium. 4-7 December 1997/Antalya. Oral presentation.

20. Toygar O, Öğüt MS. Results of the Jensen procedure in acquired sixth nerve palsy. TOD 31st National Ophthalmology Congress. 16-20 September 1997/Istanbul. Oral presentation.