نتایج جستجو برای: iris neovascularization

تعداد نتایج: 23195  

Journal: :Life 2021

Immune reconstitution inflammatory syndrome (IRIS) presents as an exaggerated immune reaction that occurs during dysregulated restoration in immunocompromised patients late-stage human immunodeficiency virus (HIV) infection who have commenced antiretroviral treatments (ART). Virtually any opportunistic pathogen can provoke this type of disorder. In review, we focus on recent developments the id...

Journal: :Archives of ophthalmology 2000
J A Shields C L Shields J Pulido R C Eagle A F Nothnagel

Iris varix is rare and little is known about its clinical characteristics. We treated a thrombosed iris varix that simulated an iris melanoma. A 53-year-old man developed a dark brown iris mass and hyphema in his left eye. Ultrasound biomicroscopy revealed a circumscribed mass of the iris stroma. Because of suspicion for melanoma, it was removed by sector iridectomy. Histopathologic examination...

Journal: :ACM SIGOPS Operating Systems Review 2017

2011
A. Murugan G. Savithiri

The authentication of people using Iris based recognition system is the most reliable biometric traits due to its stability, invariant and distinctive features for personal identification. Iris recognition consists of localization of the Iris region, extracting Iris features, generation of data set of Iris images and then Iris pattern recognition. This paper presents Iris recognition system bas...

Journal: :The British journal of ophthalmology 2015
Michael E Snyder Mauricio A Perez

We present a novel iris repair technique for the management of iris transillumination defects secondary to iris pigment epithelium (IPE) loss, which includes iris oversewing over the defect through partial iris stromal bites with 10-0 polypropylene. This technique provides a healthy layer of iris covering the transillumination defect without the creation of new defects on the contiguous IPE.

2011
Vishnu Naresh Boddeti Vijaya Kumar Krishnan Ramkumar

High performance human identification using iris biometrics requires the development of automated algorithms for robust segmentation of the iris region given an ocular image. Many studies have shown that iris segmentation is one of the most crucial element of iris recognition systems. While many iris segmentation techniques have been proposed, most of these methods try to leverage gradient info...

2011
P. Radu K. Sirlantzis W.G.J. Howells F. Deravi S. Hoque

The majority of the iris recognition algorithms available in the literature were developed to operate on near infrared images. A desirable feature of iris recognition systems with reduced constraints such as potential operability on commonly available hardware is to work with images acquired under visible wavelength. Unlike in near infrared images, in colour iris images the pigment melanin pres...

Journal: :journal of current ophthalmology 0
مهرداد محمدپور mehrdad mohammadpour حسن هاشمی hassan hashemi محمود جباروند mahmoud jabbarvand مریم حسن زاد maryam hassanzad فاطمه السادات ثابت fatemeh alsadat sabet مهرناز فلاح تفتی mehrnaz fallah tafti بهناز مهدویانی

purpose : to determine cyclotorsional eye movement between the upright position and the supine position, in iranian patients with high preoperative astigmatism methods : this prospective cross sectional study contains 102 eyes of 59 patients who were candidates for refractive surgery with technolas 217z100 excimer laser system for correction of high astigmatism. wavefront measurements using zyw...

Journal: :Blood 2012
Polidy Pean Eric Nerrienet Yoann Madec Laurence Borand Didier Laureillard Marcelo Fernandez Olivier Marcy Chan Sarin Kerya Phon Sylvia Taylor Gianfranco Pancino Françoise Barré-Sinoussi Daniel Scott-Algara

Immune reconstitution inflammatory syndrome (IRIS) is a common and potentially serious complication occurring in HIV-infected patients being treated for tuberculosis (TB) using combined antiretroviral treatment. A role of adaptive immunity has been suggested in the onset of IRIS, whereas the role of natural killer (NK) cells has not yet been explored. The present study sought to examine the inv...

Journal: :IEICE Transactions 2005
Haruki Ota Shinsaku Kiyomoto Toshiaki Tanaka

In this paper, we propose a transformation function for a user’s raw iris data, an “iris code” in iris scanning verification on the server, since the iris code requires to be hidden from even a server administrator. We then show that the user can be properly authenticated on the server, even though the iris code is transformed by the proposed function. The reason is that the function has a char...

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