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    Quantitative analysis of retinal microcirculation in optical coherence tomography angiography in cases with Behcet's disease without ocular involvement
    (SPRINGER, 2019) Comez, Aysegul; Beyoglu, Abdullah; Karakucuk, Yalcin
    PurposeTo evaluate the retinal vascular plexus and choriocapillaris structures in patients with non-ocular Behcet's disease (BD) using optical coherence tomography angiography (OCTA).MethodsThe study included 42 eyes of non-ocular BD patients (study group) and 40 eyes of 20 healthy subjects (control group). Flow area (mm(2)), mean vascular density (VD) (%) and foveal avascular zone (FAZ) (mm(2)) were measured using OCTA (Optovue Inc., Fremont, CA, USA). Subfoveal choroidal thickness (CT) (mu m) and central macular thickness (CMT) (mu m) measurements were also performed.ResultsThe mean superficial capillary plexus, deep capillary plexus and choriocapillaris flow area values were found to be significantly lower in the study group than in the control group (p<0.001, p<0.001, p=0.008, respectively). In respect of mean VD, a statistically significant difference was determined between the study and control groups in both superficial and deep VD (p<0.001). No statistically significant difference was found out between the groups in respect of superficial FAZ, deep FAZ and CMT (p=0.165, p=0.477, p=0.457, respectively). The subfoveal CT was also measured to be significantly thicker in the study group than in the control group (p<0.001).ConclusionThe results obtained with OCTA revealed that there could be both retinal and choroidal involvement in non-ocular BD patients before the emergence of evident clinical findings.
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    Quantitative assessment of the effect of acute anaerobic exercise on macular perfusion via swept-source optical coherence tomography angiography in young football players
    (SPRINGER, 2019) Karakucuk, Yalcin; Okudan, Nilsel; Bozkurt, Banu; Belviranli, Muaz; Sezer, Tugba; Gorcuyeva, Sona
    Aim To evaluate the effect of acute anaerobic exercise on macular perfusion measured by swept-source optical coherence tomography angiography (SS-OCTA) in young football players. Materials and methods Football players with ages between 18 and 20 years were included into the study. After a detailed ophthalmological examination, physiological parameters including height (cm), body weight (kg), body fat percentage (%), systemic blood pressure (BP) (mmHg), hematocrit values (%), oxygen saturation pO(2) (%) and heart rate (bpm) were recorded. Intraocular pressure (IOP) (mmHg) and SS-OCTA using DRI OCT Triton (Topcon, Tokyo, Japan) were measured immediately before and after Wingate test. Results Out of 20, 16 participants completed the study. All participants were males with a mean age of 18.12 +/- .34 years. Systolic BP, hematocrit and heart rate increased, while pO(2) and IOP decreased remarkably after Wingate test (p < .01). After anaerobic exercise, there was an increase in mean FAZ area in superficial capillary plexus (FAZs) which was not significant (p = .13), while decrease in FAZ area in deep capillary plexus (FAZd) (mm(2)) was remarkable (p = .04). No changes were observed in mean vessel density (VD) (%) in superficial capillary plexus (VDs), deep capillary plexus (VDd), choriocapillaris (VDcc), central macular thickness (CMT) (mu m) and subfoveal choroidal thickness (SFCT) (mu m) after Wingate test (p > .05). FAZd and some of the VD parameters showed a significant correlation with BP (p < .05). Conclusion Acute anaerobic exercise seems not to alter either mean VD in retina and choroid or CMT and SFCT. Among OCTA parameters, only FAZd decreased remarkably.