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Academician

MEHMET OKKA

Profesör

Necmettin Erbakan Üniversitesi Tıp Fakültesi Cerrahi Tıp Bilimleri Bölümü

Research topics OpenAlex
  1. Ana Dal Sağlık Bilimleri Temel Alanı
  2. Yan Dal Göz Hastalıkları
Articles 54 YÖKSİS 54 · OpenAlex 0 Total citations 248 h-index 9 · OpenAlex OpenAlex coverage %65 matched 33 / 51 Q1 articles 4 Scopus · WoS Q1 0 Best field rank #9,305 / 39,749 Main field · top 23.4% Co-authors 86 10 Turkish institutions

Citation impact

Citation counts of the articles matched in OpenAlex, citing publications from Crossref and the Stanford/Elsevier list. Sources are shown separately and never added up.

OpenAlex YÖKSİS articles matched in OpenAlex: 33 + YÖKSİS · co-author record: 2
h-index 9 Percentile in Türkiye: 81 #234 of 1,391 at their university by h-index
i10-index
6
Total citations
248
Top 22% in Türkiye
Per article
7.1
FWCI
0.54
1.00 = world average
World top 1%
0
World top 10%
0

Most cited articles

  1. Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure tear secretion corneal and anterior chamber parameters 2009 47 citations
  2. The evaluation of retinal nerve fiber layer thickness in patients with obstructive sleep apnea syndrome 2013 40 citations
  3. Does lens status affect the course of early intraocular pressure and anterior chamber changes after intravitreal injection 2009 30 citations
How is this computed?

h-index and citations are computed from the citation counts of this academic’s YÖKSİS articles matched in OpenAlex (not Google Scholar, WoS or Scopus). Unmatched articles are not included. 2 articles (2 citations) tagged with this academic’s YÖK author id in co-authors’ YÖKSİS records count only towards citations, h-index and i10; article counts, percentiles and rankings use their own YÖKSİS list. h-index on the OpenAlex author profile: 12.

Citing publications Crossref 65 publications citing 31 DOI-bearing articles · 18 Türkiye-affiliated
  • 2018 1
  • 2019 18
  • 2020 19
  • 2021 18
  • 2022 4
  • 2025 5
  1. Effects of abdominoplasty on intra ocular pressure and optic disc diameter TR Ertuğrul Karanfil et al. · International Ophthalmology · 2025
  2. Intraocular and ocular perfusion pressure changes during pediatric laparoscopic appendectomy TR Yasemin Dere Gunal et al. · BMC Surgery · 2025
  3. The role of special education teachers in ECC implementation: a study on barriers and time allocation in Türkiye TR Onder Islek · European Journal of Special Needs Education · 2025
  4. DOI 10.3390/biom15111519 2025
  5. DOI 10.3390/healthcare13222890 2025
  6. The effect of positive airway pressure therapy on intraocular pressure and retina in severe obstructive apnea syndrome TR Nursel Dikmen et al. · Sleep and Biological Rhythms · 2022
  7. DOI 10.2196/31732 2022
  8. DOI 10.3390/medicina58030408 2022
  9. DOI 10.3390/jcm11030815 2022
  10. Effect of fasting on diurnal fluctuation of parafoveal and peripapillary vessel density and related oculodynamic and haemodynamic parameters TR Atılım Armağan Demirtaş et al. · Photodiagnosis and Photodynamic Therapy · 2021 · cites 2 articles of this academic
  11. Diurnal Changes in Accommodation Amplitude and Anterior Segment Parameters During Ramadan Fasting TR Atılım Armağan DEMİRTAŞ et al. · Harran Üniversitesi Tıp Fakültesi Dergisi · 2021
  12. Anterior chamber changes assessment by Scheimpflug analysis after intravitreal dexamethasone implantation TR Elvan Kucukkomurcu et al. · European Journal of Ophthalmology · 2021
  13. DOI 10.2196/32233 2021
  14. DOI 10.1002/cnm.3547 2021
  15. DOI 10.1002/vms3.441 2021
  16. DOI 10.7759/cureus.17207 2021
  17. DOI 10.1186/s12245-021-00398-x 2021
  18. DOI 10.1155/2021/8873283 2021
  19. DOI 10.3341/jkos.2021.62.6.762 2021
  20. DOI 10.1007/s40675-021-00215-0 2021
  21. DOI 10.3341/kjo.2020.0019 2021
  22. DOI 10.1007/978-3-030-76525-5_8 2021
  23. DOI 10.2147/opth.s291991 2021
  24. DOI 10.1055/a-1346-4248 2021
  25. DOI 10.1080/01658107.2021.1995442 2021
  26. DOI 10.3390/jcm10153422 2021
  27. DOI 10.2196/preprints.31732 2021
  28. Alterations in Parafoveal and Optic Disc Vessel Densities in Patients with Obstructive Sleep Apnea Syndrome TR Turgay Ucak et al. · Journal of Ophthalmology · 2020
  29. Evaluation of effects of positive airway pressure treatment on retinal fiber thickness and visual pathways using optic coherence tomography and visual evoked potentials in the patients with severe obstructive sleep apnea syndrome TR Melike Batum et al. · International Ophthalmology · 2020
  30. Evaluation of the effect of fasting on intraocular pressure, anterior segment parameters and density of crystalline lens and cornea TR Abdullah Beyoğlu et al. · International Ophthalmology · 2020

Showing the 30 most recent.

Where does this list come from?

Extracted from the reference lists in Crossref’s public March 2026 data file; 20.3% of the file has been processed, so the list may be incomplete. Crossref citations are never added to or compared with the OpenAlex citation counts; the two sources have different coverage.

Field ranking

Position in the main-field, side-field and keyword cohorts by YÖKSİS article score; each card opens that ranking.

YÖKSİS ?

Works 54

YÖKSİS and OpenAlex records: index distribution, journals published in, a filterable article list and the other output types.

Indexes and citation percentiles

?
TR Index 11 articles
OpenAlex citation percentile
Top 1%0
Top 10%0
Avg · n 40 %49.4
Other counts

Scopus (SJR)

  • YÖKSİS rows 37

WoS (JCR)

  • YÖKSİS rows 31

Articles

Articles with YÖKSİS and OpenAlex source split; narrow by quartile or TR Index.

54articles

Journals with publications

28 journals

Narrow down

Scopus (SJR)
Q14 Q210 Q310 Q49
WoS (JCR)
Q10 Q26 Q310 Q411
TR Index
11articles

Article list

  1. 2025 Wipe-Out Phenomenon After Gonioscopy-Assisted Transluminal Trabeculotomy JOURNAL OF GLAUCOMA DOI 10.1097/ijg.0000000000002603 2 YÖKSİS records YÖKSİS SJR Q1 JCR Q2 OpenAlex 83.6%
  2. 2025 Response to Letter to the Editor: Wipe-Out Phenomenon after Gonioscopy-Assisted Transluminal Trabeculotomy Journal of Glaucoma DOI 10.1097/IJG.0000000000002676 YÖKSİS SJR Q1 JCR Q2
  3. 2025 Authors reply to ‘considerations for fasting and dehydration effects on pupillary light reflex: A commentary on Adam et al.’ Clinical Physiology and Functional Imaging DOI 10.1111/cpf.70018 YÖKSİS SJR Q3 JCR Q4 OpenAlex 10.2%
  4. 2025 Influence of suture thickness on clinical outcomes in gonioscopy-assisted transluminal trabeculotomy: a comparative analysis of 5-0 and 6-0 polypropylene sutures INTERNATIONAL OPHTHALMOLOGY DOI 10.1007/s10792-025-03682-4 YÖKSİS SJR Q2 JCR Q3 OpenAlex 22.4%
  5. 2025 The effects of fasting and dehydration on pupillary light reflex as detected by pupillometry Clinical Physiology and Functional Imaging DOI 10.1111/cpf.12921 YÖKSİS SJR Q3 JCR Q4 OpenAlex 51.2%
  6. 2025 Ab Interno Occlusion of Ahmed Glaucoma Valve Tube with a 4-0 Polypropylene Suture in a Patient with Hypotony BEYOGLU EYE JOURNAL DOI 10.14744/bej.2025.56667 YÖKSİS TR Index SJR Q3 JCR Q4 OpenAlex 19.1%
  7. 2025 Triglyceride-Glucose Index in Central Retinal Artery Occlusion: A Metabolic Risk Factor? Genel Tıp Dergisi DOI 10.54005/geneltip.1683730 YÖKSİS TR Index SJR Q4 OpenAlex 77.0%
  8. 2025 Monocyte to High-Density Lipoprotein Cholesterol Ratio in Patients with Retinal Artery Occlusion SELCUK MEDICAL JOURNAL DOI 10.30733/std.2025.01754 2 YÖKSİS records YÖKSİS OpenAlex 8.7%
  9. 2025 Pathological Myopia and Cataract: Treatment Strategies and Current Approaches Güncel Retina Dergisi (Current Retina Journal) DOI 10.37783/CRJ-0511 YÖKSİS TR Index OpenAlex 33.1%
  10. 2024 Corneal innervation changes ın Alzheimer’s: implications for sensory dysfunction International Ophthalmology DOI 10.1007/s10792-024-03162-1 2 YÖKSİS records YÖKSİS SJR Q2 JCR Q3 OpenAlex 86.1%
  11. 2022 Dry eye disease and ocular surface characteristics in patients with keratoconus Saudi Journal of Ophthalmology DOI 10.4103/sjopt.sjopt_37_21 YÖKSİS SJR Q3 JCR Q4 OpenAlex 74.9%
  12. 2022 Evaluation of the systemic inflammation in patients with pterygium: Monocyte-to- high-density lipoprotein cholesterol ratio and hematologic indexes of inflammation Middle East African Council of Ophthalmology DOI 10.4103/meajo.meajo_75_21 2 YÖKSİS records YÖKSİS SJR Q3 JCR Q4 OpenAlex 61.4%
  13. 2021 Ocular-symptoms-related Google Search Trends during the COVID-19 Pandemic in Europe International Ophthalmology DOI 10.1007/s10792-021-01782-5 YÖKSİS SJR Q2 JCR Q3 OpenAlex 81.9%
  14. 2021 The Causes and Frequency of Monocular and Binocular Blindness in Adults Applying to the Health Committee of a University Hospital in Central Anatolia Turkish Journal of Ophthalmology DOI 10.4274/tjo.galenos.2020.88120 YÖKSİS SJR Q3 OpenAlex 50.6%
  15. 2019 The Frequency and Causes of Blindness in a Rural Region of Central Anatolia of Turkey EURASIAN JOURNAL OF MEDICINE DOI 10.5152/eurasianjmed.2019.18312 YÖKSİS TR Index SJR Q3 OpenAlex 65.4%
  16. 2019 The efficacy of bleb needling revision with 5-fluorouracil in encapsulated bleb after unsuccessful trabeculectomy The European Research Journal DOI 10.18621/eurj.425740 YÖKSİS TR Index OpenAlex 54.9%
  17. 2019 Corneal Biomechanics in Patients with Glaucoma: The Effect of Pupillary Dilatation Selcuk Tip Dergisi DOI 10.30733/std.2019.01084 YÖKSİS TR Index OpenAlex 2.5%
  18. 2018 Malignant Hypertension Due to Mesenteric Fibromatosis: A Case Report Retina-Vitreus Dergisi YÖKSİS SJR Q4 OpenAlex 36.2%
  19. 2017 Kubbe Şekilli Makülalı Bir Olguda Eşlik Eden FovealSeröz Retina Dekolmanı - Klinik Seyir ve Literatür Özeti Retina-Vitreus Dergisi YÖKSİS SJR Q4
  20. 2016 Six month outcomes of corneal crosslinking with dextran free isotonic riboflavin solution Arquivos Brasileiros de Oftalmologia DOI 10.5935/0004-2749.20160045 YÖKSİS SJR Q3 JCR Q4 OpenAlex 70.0%

Projects 7 See all (7) →

  1. 2016 Açık Açılı Glokom veya Oküler Hipertansiyon Hastalarında Bimatoprost ın Etkililiği ve Güvenliliği Uluslararası İkili İşbirliği Programları · Tamamlandı 2016-06-06 – 2020-06-20
  2. — Glokom prevalans çalışması DİĞER · Tamamlandı
  3. — Studies comparing IOP lowering responses of new therapeutic PG compounds to PGF2a ie in the normotensive cynomolgus monkeys Additivity of sulprostone and latanaprost to recreate PGF2a ie IOP lowering DİĞER · Tamamlandı
  4. — The additive effects of pilocarpine and some promising potentially therapeutic cytoskeletal agents on outflow facility response in nonhuman primates DİĞER · Tamamlandı
  5. — The Intraocular pressure IOP response in nonhuman primates to a new potential glaucoma therapeutic agent DİĞER · Tamamlandı

Books 1

  1. 2022 Glokom Analizi Olgular Bazında Yaklaşım Anadolu Kitabevi ISBN 978-605-71464-5-8 Kitap Bölümü · Bilimsel Kitap

Proceedings 99 See all (99) →

  1. 2015 The effect of dehydration andreligious fasting on corneal biomechanical properties and intraocular pressure 33rd Congressof the ESCRS
  2. 2018 Optik Disk Piti Makulopatisinin Lazer Fotokoagulasyon ve Gaz Tamponadı ile Tedavisi Türk Oftalmoloji Derneği 52. Ulusal Kongresi
  3. 2016 Sudden Onset Vision Loss as an Initial Manifestation of Elevated Serum Lipoprotein a Levels 62nd Annual Scientific and Standardization Committee Meeting of the International Society on Thrombosis and Haemostasis
  4. 2013 Sağlıklı bireylerde topikal siklopentolat hidroklorür solüsyonun kornea biyomekaniği üzerine etkilerinin değerlendirilmesi TOD. 47. Ulusal Oftalmoloji Kongresi
  5. 2018 İç Anadolunun Kırsal Bir Bölgesi Olan Sarıkaya’da Körlüğün Sıklığı ve Nedenleri Türk Oftalmoloji Derneği 52. Ulusal Kongresi

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Collaboration network

From the author lists of YÖKSİS publication records. Duplicate records of a work count once; institutions are co-authors’ current YÖKSİS affiliations.

Co-authors
86
With an akaturk profile
40
Turkish institutions
10
Co-authored works
%100

Academic co-authors 40

  1. REFİK OLTULU Profesör · Necmettin Erbakan Üniversitesi same university 19
  2. ENVER MİRZA Doçent · Necmettin Erbakan Üniversitesi same university 17
  3. MEHMET ADAM Doktor Öğretim Üyesi · Necmettin Erbakan Üniversitesi same university 11
  4. SELMAN BELVİRANLI Doçent · Necmettin Erbakan Üniversitesi same university 11
  5. BANU BOZKURT Profesör · Selçuk Üniversitesi 10
  6. MEHMET KEMAL GÜNDÜZ Profesör · Başkent Üniversitesi 10
  7. GÜNHAL ŞATIRTAV AKDENİZ Profesör · Necmettin Erbakan Üniversitesi same university 8
  8. SÜLEYMAN OKUDAN Profesör · Selçuk Üniversitesi 8
  9. AHMET ÖZKAĞNICI Profesör · Necmettin Erbakan Üniversitesi same university 6
  10. ALİ OSMAN GÜNDOĞAN Doktor Öğretim Üyesi · Necmettin Erbakan Üniversitesi same university 6
Show all (40)
  1. NAZMİ ZENGİN Profesör · Karamanoğlu Mehmetbey Üniversitesi 6
  2. GÜLFİDAN BİTİRGEN Doçent · Necmettin Erbakan Üniversitesi same university 4
  3. ALİ ÜNLÜ Profesör · Selçuk Üniversitesi 3
  4. İSMAİL ERŞAN Profesör · Çanakkale Onsekiz Mart Üniversitesi 3
  5. AHMET TEKİN Profesör · Necmettin Erbakan Üniversitesi same university 2
  6. CELALETTİN VATANSEV Profesör · Necmettin Erbakan Üniversitesi same university 2
  7. DUYGU ERYAVUZ ONMAZ Doçent · Bandırma Onyedi Eylül Üniversitesi 2
  8. TEVFİK KÜÇÜKKARTALLAR Profesör · Necmettin Erbakan Üniversitesi same university 2
  9. İLHAN ECE Profesör · Selçuk Üniversitesi 2
  10. ABDULLAH SİVRİKAYA Profesör · Selçuk Üniversitesi 1
  11. ADNAN KARAİBRAHİMOĞLU Doçent · Süleyman Demirel Üniversitesi 1
  12. AHMET ALTINBAŞ Profesör · Süleyman Demirel Üniversitesi 1
  13. AHMET HAKAN EKMEKCİ Doçent · Selçuk Üniversitesi 1
  14. BERKER BAKBAK Profesör · Kto Karatay Üniversitesi 1
  15. BERRİN OKKA Profesör · Necmettin Erbakan Üniversitesi same university 1
  16. BERİVAN EKİNCİ Doktor Öğretim Üyesi · Dicle Üniversitesi 1
  17. EMİNE TINKIR KAYITMAZBATIR Doktor Öğretim Üyesi · Selçuk Üniversitesi 1
  18. MAHMUT SELMAN YILDIRIM Profesör · Necmettin Erbakan Üniversitesi same university 1
  19. MEHMET TOKAÇ Profesör · İzmir Katip Çelebi Üniversitesi 1
  20. MUSTAFA SERKAN ÖZTÜRK Doktor Öğretim Üyesi · Necmettin Erbakan Üniversitesi same university 1
  21. MÜNİRE MERAL YAĞÇI TURAN Doktor Öğretim Üyesi · Dicle Üniversitesi 1
  22. NURHAYAT GÜNEŞ AYTAÇ Doçent · Dicle Üniversitesi 1
  23. PEMBE OLTULU Profesör · Necmettin Erbakan Üniversitesi same university 1
  24. RABİHA ARSLAN YILDIRIM Öğretim Görevlisi (ders Vermekle Görevli) · Dicle Üniversitesi 1
  25. SEDAT ABUŞOĞLU Profesör · Selçuk Üniversitesi 1
  26. SELÇUK DUMAN Profesör · Necmettin Erbakan Üniversitesi same university 1
  27. TAHSİN MURAD AKTAN Profesör · Necmettin Erbakan Üniversitesi same university 1
  28. ŞANSAL GEDİK Profesör · Akdeniz Üniversitesi 1
  29. ŞEBNEM YOSUNKAYA Profesör · Necmettin Erbakan Üniversitesi same university 1
  30. ŞEREFNUR ÖZTÜRK Profesör · Selçuk Üniversitesi 1

National collaboration 10 institutions

Within own university37 joint works · Necmettin Erbakan Üniversitesi

  1. Selçuk Üniversitesi 19 works · 9 academics
  2. Başkent Üniversitesi 10 works · 1 academics
  3. Karamanoğlu Mehmetbey Üniversitesi 6 works · 1 academics
  4. Çanakkale Onsekiz Mart Üniversitesi 3 works · 1 academics
  5. Bandırma Onyedi Eylül Üniversitesi 2 works · 1 academics
  6. Süleyman Demirel Üniversitesi 2 works · 2 academics
  7. Akdeniz Üniversitesi 1 works · 1 academics
  8. Dicle Üniversitesi 1 works · 4 academics
  9. Kto Karatay Üniversitesi 1 works · 1 academics
  10. İzmir Katip Çelebi Üniversitesi 1 works · 1 academics

Other co-authors (incl. international) 46

HÜRKAN KERİMOĞLU 16Gunsu Deniz Mirza 10BANU TURĞUT ÖZTÜRK 8Kaufman PL 4ÜMİT KAMIŞ 4ADİL KARTAL 2ALİ TEZCAN 2Gabelt BT 2HAMİYET PEKEL 2ORHAN ALTUNKAYA 2Tian B 2ÖZBAYRAK NİLGÜN 2ALİ ANNAGÜRBAYRAM KORKUTBENGÜ EKİNCİ KÖKTEKİRBendel MABurhan TAYIRConstant CEDean TRERKAN SOYLUEissa AlmaghrebiFatma AkatHANİFE YUMAK ERKOÇHASAN GÖKHASAN TELLİHennes EAHÜSEYİN ENDOĞRUHÜSEYİN TOLKORKAR MCKaram GharabMUSTAFA ALTAŞMartina RasticovaMert TÜRKENMeryem DonbalogluMohammad Ahmad BikN BAVBEKNURCAN ÖZTÜRKOzturk BTRASIER YACOVTURAN MEYDAN

Show all (46)

Yılmaz MZeynep Büyükbaşİlkay Tuğçe Karaİsmail DoğruŞAZİYE MELİKE IŞIKŞÜKRÜ BALEVİ

Authors without an akaturk profile (international researchers, retired or former academics, students, clinicians) are grouped by name spelling; short forms such as “Gulluce M.” join the single full name they match.