mehmet erkan dogan

Dr. mehmet erkan dogan

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 March 2024 in Eye
Verified
Journal Article
Open access
PDF file
MDmehmet erkan dogan
mehmet erkan dogan
ABAhmet Burak Bilgin
Ahmet Burak Bilgin
RSRamazan Sari
Ramazan Sari
MBMehmet Bulut
Mehmet Bulut
YAYusuf Akar
Yusuf Akar
MAMustafa Aydemir
Mustafa Aydemir
Background: Diabetic Retinopathy (DR) is a leading cause of blindness worldwide, affecting people with diabetes. The timely diagnosis and treatment of DR are essential in preventing vision loss. Non-mydriatic fundus cameras and artificial intelligence (AI) software have been shown to improve DR screening efficiency. However, few studies have compared the diagnostic performance of different non-mydriatic cameras and AI software. Methods: This clinical study was conducted at the endocrinology clinic of Akdeniz University with 900 volunteer patients that were previously diagnosed with diabetes but not with diabetic retinopathy. Fundus images of each patient were taken using three non-mydriatic fundus cameras and EyeCheckup AI software was used to diagnose more than mild diabetic retinopathy, vision-threatening diabetic retinopathy, and clinically significant diabetic macular oedema using images from all three cameras. Then patients underwent dilation and 4 wide-field fundus photography. Three retina specialists graded the 4 wide-field fundus images according to the diabetic retinopathy treatment preferred practice patterns of the American Academy of Ophthalmology. The study was pre-registered on clinicaltrials.gov with the ClinicalTrials.gov Identifier: NCT04805541. Results: The Canon CR2 AF AF camera had a sensitivity and specificity of 95.65% / 95.92% for diagnosing more than mild DR, the Topcon TRC-NW400 had 95.19% / 96.46%, and the Optomed Aurora had 90.48% / 97.21%. For vision threatening diabetic retinopathy, the Canon CR2 AF had a sensitivity and specificity of 96.00% / 96.34%, the Topcon TRC-NW400 had 98.52% / 95.93%, and the Optomed Aurora had 95.12% / 98.82%. For clinically significant diabetic macular oedema, the Canon CR2 AF had a sensitivity and specificity of 95.83% / 96.83%, the Topcon TRC-NW400 had 98.50% / 96.52%, and the Optomed Aurora had 94.93% / 98.95%. Conclusion: The study demonstrates the potential of using non-mydriatic fundus cameras combined with artificial intelligence software in detecting diabetic retinopathy. Several cameras were tested and, notably, each camera exhibited varying but adequate levels of sensitivity and specificity. The Canon CR2 AF emerged with the highest accuracy in identifying both more than mild diabetic retinopathy and vision-threatening cases, while the Topcon TRC-NW400 excelled in detecting clinically significant diabetic macular oedema. The findings from this study emphasize the importance of considering a non mydriatic camera and artificial intelligence software for diabetic retinopathy screening. However, further research is imperative to explore additional factors influencing the efficiency of diabetic retinopathy screening using AI and non mydriatic cameras such as costs involved and effects of screening using and on an ethnically diverse population.

10 July 2018 in International Ophthalmology
Verified
Journal Article
Closed access
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ABAhmet Burak Bilgin
Ahmet Burak Bilgin
MDmehmet erkan dogan
mehmet erkan dogan
BABasak Aysun
Basak Aysun
KAKadri Cemil Apaydın
Kadri Cemil Apaydın

1 January 2021 in Journal of Ophthalmology
Verified
Journal Article
Open access
PDF file
ESElcin Suren
Elcin Suren
MKMustafa Kalayci
Mustafa Kalayci
ECErsan Cetinkaya
Ersan Cetinkaya
MKMehmet Fatih Küçük
Mehmet Fatih Küçük
MDmehmet erkan dogan
mehmet erkan dogan
MEMuhammet Kazim Erol
Muhammet Kazim Erol
Purpose . To compare the visual outcomes and complications of patients who underwent flanged transconjunctival sutureless intrascleral intraocular lens (SIS IOL) implantation after anterior and pars plana vitrectomy. Methods . All patients who underwent flanged transconjunctival SIS IOL fixation using a 27‐gauge needle between September 2017 and November 2019 and were followed up for at least six months were evaluated. The cases in which anterior vitrectomy was performed were classified as Group 1, and those that underwent pars plana vitrectomy were classified as Group 2. The best‐corrected visual acuity (BCVA), spherical equivalent values, corneal endothelial cell density, and intraocular pressures were compared between the two groups before and after the operation. Intraoperative and postoperative complications were assessed. Results . The study included 108 eyes of 108 patients who were included in the study. Group 1 consisted of 48 patients and Group 2 comprised of 60 patients. When the findings between Groups 1 and 2 were compared in the postoperative period, there was no statistically significant difference in terms of the mean intraocular pressure increase, endothelial cell density, BCVA, and spherical equivalent value ( P = 0.818, 0.601, 0.368, and 0.675, respectively). When all the patients were considered as a single group, the mean spherical value at the sixth postoperative month was 0.3 ± 2.2 D (min‐max, (−5.5)–(+6)), the mean cylindrical value was −1.7 ± 2.4 D (min‐max, (−9.25)–(+4)), and the mean spherical equivalent value was −0.5 ± 2.3 D (min‐max, (−6.5)–(+6)). Conclusion . The flanged transconjunctival SIS IOL fixation technique performed using a 27‐gauge needle is safe and effective in the patient group with aphakia and lens/IOL dislocation or subluxation. However, in patients planned to undergo flanged transconjunctival SIS IOL implantation, pars plana vitrectomy seems to be a more suitable option than anterior vitrectomy to reduce complications.

14 September 2023 in International Ophthalmology
Verified
Journal Article
Closed access
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YAYusuf Ayaz
Yusuf Ayaz
ÇPÇisil Erkan Pota
Çisil Erkan Pota
İBİbrahim Başol
İbrahim Başol
MDmehmet erkan dogan
mehmet erkan dogan
EŞElif Betül Türkoğlu Şen
Elif Betül Türkoğlu Şen
MÜMustafa Ünal
Mustafa Ünal

28 December 2017 in Ocular Immunology and Inflammation
Verified
Journal Article
Closed access
ABAhmet Burak Bilgin
Ahmet Burak Bilgin
MDmehmet erkan dogan
mehmet erkan dogan
YAYusuf Ayaz
Yusuf Ayaz
KAKadri Cemil Apaydin
Kadri Cemil Apaydin
Purpose: To compare the efficacy and safety of postoperative topical loteprednol etabonate (LE) 0.5% with dexamethasone (DEX) 0.1% for the treatment of inflammation following pars plana vitrectomy (PPV). Methods: A total of 150 eyes of 150 patients who underwent transconjunctival PPV for various diagnoses were included in this prospective, randomized study. The patients were assigned into two groups as Group LE (n = 75) and Group DEX (n = 75). Intraocular inflammation, intraocular pressure (IOP), and the intensity of postoperative pain were compared between the groups. Results: The mean IOP was higher in the patients treated with DEX (p > 0.05). The need for anti-glaucoma medications was significantly lower in Group LE (5.3%) than in Group DEX (17.3%) (p = 0.020). Tyndall scores were less in Group DEX at postoperative Days 1 (p = 0.01) and 3 (p = 0.017). On Day 1, it was more likely for patients to have mild or moderate pain in Group LE (p < 0.001). On Day 3, the number of the patients with no pain was higher in Group DEX (p = 0.005). Conclusions: Although DEX is more effective in the early postoperative days, LE appears to be as effective in controlling inflammatory response following PPV in the long-term. Topical LE is associated with less increase in the IOP and a lower need for anti-glaucoma medications.

1 September 2020 in Journal Français d'Ophtalmologie
Verified
Journal Article
Closed access
ETE.B. Turkoglu
E.B. Turkoglu
İBİbrahim Başol
İbrahim Başol
YAY. Ayaz
Y. Ayaz
MDmehmet erkan dogan
mehmet erkan dogan
KAK.C. Apaydın
K.C. Apaydın
BUB. Unal
B. Unal