Hemodynamics of the temporal and nasal short posterior ciliary arteries in pseudoexfoliation syndrome
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ORIGINAL PAPER
Hemodynamics of the temporal and nasal short posterior ciliary arteries in pseudoexfoliation syndrome Nese Cetin Dog˘an Emine Ciloglu
. Nusret Ozdemir . Kairgeldy Aikimbaev .
Received: 21 April 2020 / Accepted: 29 August 2020 Ó Springer Nature B.V. 2020
Abstract Purpose The aim of this study was to investigate blood flow changes in the temporal and nasal short posterior ciliary arteries (SPCAs) in pseudoexfoliation syndrome using color Doppler ultrasonography. Methods This prospective clinical study included 67 eyes of 53 patients scheduled for cataract surgery. Pseudophakic eyes, eyes with traumatic cataract, were excluded. The demographic characteristic of the patients were recorded. Ocular blood flow was measured using 6–10 MHz Doppler ultrasound. Peak systolic velocity (PSV), end-diastolic velocity (EDV), mean flow velocity (Vm), and resistive index (RI) in the temporal and nasal SPCAs were determined for 39 eyes of 30 patients with pseudoexfoliation syndrome and cataract and a control group comprising 28 eyes of 23 patients with senile cataract. Results Compared to the control group, patients with pseudoexfoliation syndrome had significantly lower N. Cetin Dog˘an (&) E. Ciloglu Department of Ophthalmology, Adana City Training and Research Hospital (Adana S¸ ehir Eg˘itim Ve Aras¸ tırma Hastanesi, Go¨z Hastalıkları Klinig˘i), 01160 Adana, Turkey e-mail: [email protected] N. Ozdemir Private Practice, Adana, Turkey K. Aikimbaev Department of Radiology, Cukurova University, Adana, Turkey
PSV (8.85 ± 2.88 cm/s), EDV (3.21 ± 1.12 cm/s), and Vm (5.27 ± 1.98 cm/s) in the temporal SPCA (PSV P = .001; EDV P = .002; Vm P = .001). There was no difference in velocities in the nasal SPCA. RI of both the temporal and nasal SPCA did not differ statistically between the groups (temporal SPCA P = .517, nasal SPCA P = .752) Conclusion There were significant decreases in temporal SPCA hemodynamic parameters in patients with pseudoexfoliation syndrome. These findings suggest that temporal SPCA ocular blood flow measurements have greater diagnostic value than those of the nasal SPCA. Keywords Pseudoexfoliation Temporal short posterior ciliary artery Ocular blood flow Doppler ultrasonography
Introduction Pseudoexfoliation syndrome (PES) is a systemic disease characterized by abnormal elastic and fibrillary material synthesis and accumulation in the ocular tissues [1]. This syndrome affects about 0.2–30% of people older than 60 years worldwide [2]. Ocular manifestations of pseudoexfoliation (PEX) have been well defined such as pseudoexfoliation glaucoma (PEG), cataract formation, zonular instability and poor mydriasis. Iris transillumination defects occur in
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PES because exfoliation material causes secondary ischemia due to the contraction and hypoperfusion of the iris vessels [3, 4]. Studies show that pseudoexfoliation material accumulates not only in the iris vessels but throughout the ocular circulation [5]. However, the value o
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