نتایج جستجو برای: intraocular pressure iop

تعداد نتایج: 420471  

2016
Baoying Dong Zhihui Li Xuefu Tang Yongbo Duan

To observe curative effects of phacoemulsification combined with intraocular lens implantation alone or associated with vitreous aspiration in treating angle closure glaucoma (ACG) patients with concomitant cataract. A retrospective comparative analysis of 72 ACG patients (78 eyes) with concomitant cataract was conducted. Patients in group A underwent phacoemulsification combined with intraocul...

2011
Sayantan Biswas Rajiv Raman Vaitheeswaran Koluthungan Tarun Sharma

OBJECTIVES This study was conducted to show the intraocular pressure (IOP) distribution and the factors affecting IOP in subjects with type 2 diabetes mellitus (DM) in India. METHODS We measured the anthropometric and biochemical parameters for confirmed type 2 DM patients. A comprehensive ocular examination was performed for 1377 subjects aged > 40 years and residing in Chennai. RESULTS A ...

2014
Łukasz Kołodziejski Jacek Robaszkiewicz Iwona Grabska-Liberek

BACKGROUND The purpose of this trail was to assess the effect of a novel intraoperative endocyclophotodestruction method on intraocular pressure in patients undergoing combined procedure of phacovitrectomy to determine the efficacy of this combined surgical approach. MATERIAL AND METHODS The study sample included 87 subjects divided into 2 groups: Group I consisted of 52 patients who underwen...

Journal: :The British journal of ophthalmology 2001
G Rainer R Menapace O Findl B Kiss V Petternel M Georgopoulos B Schneider

AIM To evaluate the effects of the dispersive viscoelastic agents Ocucoat (hydroxypropyl methylcellulose 2%) and Viscoat (sodium chondroitin sulphate 4%-sodium hyaluronate 3%) on postoperative intraocular pressure (IOP) after bilateral small incision cataract surgery. METHODS This prospective, randomised study comprised 80 eyes of 40 consecutive patients with age related cataract in both eyes...

Journal: :Investigative ophthalmology & visual science 2011
Amit Todani Irmgard Behlau Mark A Fava Fabiano Cade Daniel G Cherfan Fouad R Zakka Frederick A Jakobiec Yuqing Gao Claes H Dohlman Samir A Melki

PURPOSE To determine the biocompatibility of a new wireless intraocular pressure (IOP) transducer (WIT) in rabbit eyes and to correlate its measurements with other pressure-measuring devices. METHODS The WIT is a ring-shaped intraocular device that allows wireless IOP measurements through radiofrequency. It was implanted into six eyes of New Zealand White rabbits after extracapsular lens extr...

Journal: :JPMA. The Journal of the Pakistan Medical Association 1998
I A Qureshi X R Xi X D Wu N Pasha Y B Huang

The present study investigated whether a correlation between days of the menstrual cycle and variations in intraocular pressure exists or not. The number of days since the beginning of last menses was recorded along with intraocular pressure for 1,459 women. Measurements were taken by Goldmann applanation tonometer. The differences among various days of menstrual cycle were statistically insign...

Journal: : 2021

Background: Elevated intraocular pressure (IOP) is one of the most important factors for diagnosis and monitoring glaucoma. IOP currently only modifiable risk factor glaucoma, cornea transparent tissue covering front eye. It a powerful refracting surface, providing 2/3 eye's focusing power. The adult about 1/2 millimeter thick comprised 6 layers: epithelium, Bowman's membrane, stroma, Dua's lay...

2016
Alper Mete

The Valsalva maneuver (VM) is performed frequently in daily activities. It causes various transient physiological changes, including elevated blood pressure, increased intrathoracic pressure, increased peripheral venous pressure stimulation of the peripheral sympathetic system, and increased intraocular pressure (IOP). The mechanism for the transient increase in IOP during VM has not been compl...

Journal: :Encyclopedia 2022

Glaucoma, a neurodegenerative disease, has varied pathogenesis scenario, including elevated intraocular pressure (IOP), and hypoxic conditions in the retina. Consequently, degenerating optic axons at nerve head are observed clinically when extensive damage already occurred. Following IOP, changes retinal ganglion cells lead to apoptosis immediately followed by degeneration of their axons. Degra...

Journal: :acta medica iranica 0
eskandari h hamzeimoghadam a fatolahpour e sheibani e

although measurement of intracranial pressure by noninvasive methods has been suggested, but mainly invasive methods are used for this purpose-increase in episcleral venous pressure can be expected to result in a linear increase in intraocular pressure. congested oculat veins with capillary leakage and hemorrhage are seen when the icp is increased, thus theoretically measurement of intraocular ...

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