Results 181 to 190 of about 20,085 (220)

Ocular Pulse Amplitude Before and After Cataract Surgery

Current Eye Research, 2011
To investigate the impact of cataract surgery on the association of the ocular pulse amplitude (OPA) and intraocular pressure (IOP) with respect to the interpretation of OPA as an estimate of ocular blood flow.Twenty-four patients with cataract were included in a clinical study.
Niklas, Plange, Corinna, Rennings, Anne, Herr, Anke, Weber, Gernot F, Roessler, Babac E, Mazinani, Marion, Kaup, Andreas, Remky   +7 more
openaire   +2 more sources

Ocular pulse amplitude in a case of innominate steal syndrome

American Journal of Ophthalmology, 2002
To report an inter-eye difference of the ocular pulse amplitude (OPA) in a case of innominate steal syndrome, as measured by recording applanation tonometry.OPA was measured in a 49-year-old male before and after percutaneous transluminal angioplasty of the innominate artery.Before dilation of the stenotic innominate artery, OPA was 2.00 (+/- 0.49) mm ...
Claude, Kaufmann, Anna, Fierz, Spyros S, Kollias, Yves C A, Robert   +3 more
openaire   +2 more sources

Ocular Pulse Amplitude in Patients with Thyroid-associated Ophthalmopathy

European Journal of Ophthalmology, 2012
Purpose TO determine ocular pulse volume values in patients with thyroid-associated ophthalmopathy with normal intraocular pressure, and to test the hypothesis that changes in orbital tissue that accompany thyroid-associated ophthalmopathy can in turn give changes in choroidal perfusion.
Marija M, Božic, Miroslav M, Kneževic, Dijana S, Risimic, Katarina M, Cubrilo   +3 more
openaire   +2 more sources

Influence of physical exercise and nifedipine on ocular pulse amplitude

Graefe's Archive for Clinical and Experimental Ophthalmology, 1996
Ocular pulse amplitude (OPA) was measured to investigate the influence of peripheral vasoconstriction and vasodilation on choroidal perfusion in healthy volunteers and to determine whether low OPA in low-tension glaucoma (LTG) patients is associated with a vasospastic reaction and its response to the calcium channel blocker nifedipine.OPA was ...
K G, Schmidt, T W, Mittag, S, Pavlovic, V, Hessemer   +3 more
openaire   +2 more sources

Increased ocular pulse amplitude revealing aortic regurgitation

American Journal of Ophthalmology, 2004
To report a case in which observation of increased ocular pulse amplitude (OPA) estimates in both eyes lead to a diagnosis of, and was presumably due to, aortic regurgitation.Case report.An incidental finding of high OPA estimates in both eyes lead to a finding of widened arterial pulse pressure and aortic regurgitation.
Hamish D R, McKee, Manuel, Saldaña, Muhammad A, Ahad   +2 more
openaire   +2 more sources

Changes in intra-ocular pressure, ocular pulse amplitude and choroidal thickness after trabeculectomy

Clinical and Experimental Optometry, 2021
Glaucoma is one of the most common causes of blindness. Although high intra-ocular pressure (IOP) is the most important risk factor, ocular blood flow also has an effect on prognosis.The aim of this study was to investigate the IOP, ocular pulse amplitude (OPA) and choroidal thickness (CT) changes after trabeculectomy and to determine whether ...
Uğur Çiçek, Rüveyde Garip, Banu Solmaz, Cigdem Altan   +3 more
openaire   +3 more sources

The Clinical Utility of Dynamic Contour Tonometry and Ocular Pulse Amplitude

Journal of Glaucoma, 2007
To determine if ocular pulse amplitude (OPA) as measured by dynamic contour tonometry (DCT) is related to severity of glaucoma, and if intraocular pressure (IOP) as measured by DCT is related to central corneal thickness (CCT).Patients were selected from the Duke Eye Center glaucoma clinic.
Jennifer S, Weizer, Sanjay, Asrani, Sandra S, Stinnett, Leon W, Herndon   +3 more
openaire   +2 more sources

Ocular Pulse Amplitude in Patients With Descemet Stripping Endothelial Keratoplasty

Journal of Glaucoma, 2014
To study the relationship of ocular pulse amplitude (OPA) and intraocular pressure (IOP) in eyes that have undergone successful Descemet stripping endothelial keratoplasty (DSEK).Fifty eyes of 38 patients with successful DSEK at a single tertiary referral center were followed up for at least 3 months.
Renu, Jivrajka, Kara L, Schultz, Marianne O, Price, Frances W, Price, Jacob T, Wilensky, Deepak P, Edward, Thasarat S, Vajaranant   +6 more
openaire   +2 more sources

Ocular Pulse Amplitude Measurement after Retinal Detachment Surgery

Klinische Monatsblätter für Augenheilkunde, 2003
The purpose of our study was to evaluate the influence of scleral buckling on the ocular pulse amplitude (OPA) following retinal detachment (RD) surgery.The study included 48 patients with unilateral rhegmatogenous RD who underwent an uncomplicated RD operation using the conventional technique of scleral buckling without vitrectomy.
John M, Katsimpris, Ioannis K, Petropoulos, Constantin J, Pournaras   +2 more
openaire   +2 more sources

Acute effects of caffeine on choroidal thickness and ocular pulse amplitude

Cutaneous and Ocular Toxicology, 2015
To explore ocular changes in healthy people after caffeine consumption.This prospective observational study was carried out with students of the Turgut Özal University Medical Faculty from May 15 to 15 December 2014. Enrolled in the study were 17 healthy subjects (n = 17 eyes), with a median age of 24 (IQR 1), ranging between 21 and 26 years.
Dervisogullari, Mehmet Serdar, Totan, Yuksel, Yuce, Aslihan, Kulak, Ali Ender   +3 more
openaire   +2 more sources