Browsing by Author "Akmaz B."

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Comparison of intravitreal anti-vascular endothelial growth factor agents and treatment results in Irvine-Gass syndrome
(2020-10-18) Akay F.; Isuk M.U.; Akmaz B.; Güven Y.Z.
AIM: To compare the efficacy of bevacizumab, ranibizumab, and aflibercept in pseudophakic cystoid macular edema (CME) patients with Irvine-Gass syndrome (IGS). METHODS: This study is designed as retrospective consecutive case series. Those who developed postoperative pseudophakic CME that refractory to topical treatment and were treated with anti-vascular endothelial growth factor (VEGF) agents included in the study. Optical coherence tomography (OCT) examination including central macular thickness (CMT), total macular volume (TMV), retinal nerve fiber layer (RNFL), ganglion cell layer (GCL) and choroidal thickness (ChT) measurements at the baseline, 1st, 3rd and 6th month controls were performed. RESULTS: Fifty-nine eyes of 59 patients with CME and other healthy eyes of the patients (Control group) were evaluated. There were 22 eyes of 22 patients in the bevacizumab group (group 1), 19 eyes of 19 patients in the ranibizumab group (group 2), and 18 eyes of 18 patients in the aflibercept group (group 3). There was no difference in terms of age, gender, axial length, IOP, and spherical equivalent values. The baseline subfoveal and mean ChT were higher in the IGS group. The difference between the baseline and sixth month values of subfoveal and mean ChT were compared in the CME groups, thinning was observed in all three groups. GCL was thinner in the patient group at the 6th month of treatment. The resolution time of CME was observed faster in group 1. CONCLUSION: All three anti-VEGF agents seem to be effective in CME but bevacizumab appears to be slightly more cost-effective than the other two alternatives.
Evaluation of subclinical alterations in retinal layers and microvascular structures with OCT and OCTA in healthy young short-term smokers
(2021-12-01) Işik M.U.; Akay F.; Akmaz B.; Güven Y.Z.; Şahin Ö.F.
Purpose: To detect the changes that can be determined with optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) in young and short-term smokers. Method: In this cross-sectional, observational, and comparative study, 45 "healthy" smokers and 45 healthy non-smoker control participants were included. Those with a smoking history between 1 year to 5 years and an average of 10–30 cigarettes per day were included in the study. OCT and OCTA measurements were made at least 60 min after smoking and at least 8 h after caffeine-containing beverages in order to end the effect of nicotine on systemic and retinal blood flow in the smoking group. Results: The mean smoking period was 2.2 ± 0.13 years. Mean macular thickness(MMT), retinal nerve fiber layer(RNFL), and choroidal thickness(Cht) were significantly lower in the smoker group, while ganglion cell-inner plexiform layer(GC-IPL) thickness was higher. Vessel density(VD) values were similar between groups, while perfusion density(PD) values were significantly higher in the smoker group. There were significant correlations between MMT and outer VD, outer PD, foveal avascular zone(FAZ) perimeter and circularity index. FAZ area and central VD and PD were inversely correlated. Also, FAZ circularity index and subfoveal, nasal, and temporal ChTs were positively correlated. Conclusion: Despite the short-term smoking, ischemic effects were observed in retinochoroidal and vascular structures.
Evaluation of subclinical retinopathy and angiopathy with OCT and OCTA in patients with systemic lupus erythematosus
(2021-01-01) Işık M.U.; Akmaz B.; Akay F.; Güven Y.Z.; Solmaz D.; Gercik Ö.; Kabadayı G.; Kurut İ.; Akar S.
Purpose: To evaluate the choroidal and retinal layers with optical coherence tomography (OCT) and retinal microvascular structures with optical coherence tomography angiography (OCTA) in systemic lupus erythematosus (SLE) patients. Method: In this prospective, cross-sectional and comparative study, a total of 35 SLE patients and 35 healthy control participants were included. SLE patients who were using hydroxychloroquine (HCQ) and/or immunosuppressive agents are evaluated with OCT and OCTA. SLE patients who have no HCQ maculopathy observed in OCT were included in the patient group. Results: Mean macular thickness and ganglion cell inner plexiform layer (GC-IPL) thicknesses were thinner in the patient group. When the parameters obtained with OCTA were evaluated, vessel (VD) and perfusion density (PD) were significantly lower in the patient group. Central foveal thickness and foveal avascular zone parameters were negatively correlated. In addition, VD and PD, and GC-IPL thicknesses were positively correlated. Conclusion: Application of OCTA for the evaluation of microvasculature in SLE patients may be useful in subclinical changes.