Results 231 to 240 of about 7,180 (270)

Ocular Pulse Amplitude in Myopia

Journal of Ocular Pharmacology and Therapeutics, 1991
We studied the ocular pulse amplitude of myopic patients by using Alcon Pneumotonography. One hundred and eighty-eight cases (376 eyes) were enrolled in this study. The results revealed that the higher the myopia the lower the ocular pulse amplitude. The pulse amplitude has high correlation with refractive error and axial length, but poor correlation ...
Y F, Shih, I H, Horng, C H, Yang, L L, Lin, Y, Peng, P T, Hung   +5 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

Role of ocular pulse amplitude in glaucoma

Klinische Monatsblatter fur Augenheilkunde, 2015
The ocular pulse amplitude is defined as the difference between diastolic and systolic intraocular pressure. The ocular pulse is generated by the pulsatile ocular blood flow in the choroid. It is dependent on the dynamics of the cardiovascular system, the rigidity of the ocular vessels on one side and the biomechanical properties of the eye on the ...
Stürmer, J P E, Kniestedt, C
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

Influence of Ocular Pulse Amplitude on Ocular Response Analyzer Measurements

Journal of Glaucoma, 2011
To evaluate if the ocular pulse amplitude (OPA) (the difference between systolic and diastolic intraocular pressure) is associated with the measurement variability of IOPg [Goldmann-correlated intraocular pressure (IOP)], IOPcc (corneal compensated IOP), corneal hysteresis (CH), and corneal resistance factor (CRF) obtained from the ocular response ...
Guihua, Xu, Dennis Shun, Lam, Christopher Kai-shun, Leung   +2 more
openaire   +2 more sources

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 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

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

[Ocular pulse amplitude and local carbonic anhydrase inhibition].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft, 1997
Ocular perfusion is increasingly being discussed in the pathogenesis of glaucoma. The present study was designed to investigate ocular pulse amplitude (OPA) in primary open-angle glaucoma (POAG) patients with elevated intraocular pressure (HTG) and non-glaucomatous controls (CTL) following topical application of the carbonic anhydrase inhibitor ...
K G, Schmidt, B, Dick, A, von Rückmann, L E, Pillunat   +3 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