نتایج جستجو برای: photocoagulation

تعداد نتایج: 2492  

Journal: :Investigative ophthalmology & visual science 2013
Alfred K Yu Kevin D Merrill Steven N Truong Krisztina M Forward Lawrence S Morse David G Telander

PURPOSE Therapeutic retinal laser photocoagulation can damage the neurosensory retina and cause iatrogenic visual impairment. Subthreshold micropulse photocoagulation may decrease this risk by selective tissue treatment. The aim of this study was to compare subthreshold 810-nm diode micropulse laser and subthreshold 532-nm micropulse laser on the retina by histologic examination and differentia...

2014
Dong Eik Lee Ju Hyang Lee Han Woong Lim Min Ho Kang Hee Yoon Cho Mincheol Seong

PURPOSE To evaluate the effect of pattern scan laser (PASCAL) photocoagulation on peripapillary retinal nerve fiber layer (RNFL) thickness, central macular thickness (CMT), and optic nerve morphology in patients with diabetic retinopathy. METHODS Subjects included 35 eyes for the PASCAL group and 49 eyes for a control group. Peripapillary RNFL thickness, cup-disc area ratio and CMT were measu...

2016
Simona D. Nicoară Anne C. Ştefănuţ Constanta Nascutzy Gabriela C. Zaharie Laura E. Toader Tudor C. Drugan

BACKGROUND Retinopathy is a serious complication related to prematurity and a leading cause of childhood blindness. The aggressive posterior form of retinopathy of prematurity (APROP) has a worse anatomical and functional outcome following laser therapy, as compared with the classic form of the disease. The main outcome measures are the APROP regression rate, structural outcomes, and complicati...

Journal: :Investigative ophthalmology & visual science 1998
N Hiroshiba Y Ogura H Nishiwaki K Miyamoto Y Honda

PURPOSE To perform acridine orange digital fluorography on rats after scatter photocoagulation to investigate alterations of retinal microcirculation at the capillary level, the authors used leukocyte dynamics as a parameter. METHODS Twenty-five pigmented rats (Long-Evans) were studied. Argon laser photocoagulation, extending 6 disc diameters from the optic disc, was delivered to one half of ...

2013
Poya Tababat-Khani Lisa M. Berglund Carl-David Agardh Maria F. Gomez Elisabet Agardh

AIMS Sight-threatening diabetic retinopathy has been treated with photocoagulation for decades but the mechanisms behind the beneficial clinical effects are poorly understood. One target of irradiation and a potential player in this process is the retinal pigment epithelium (RPE). Here we establish an in vitro model for photocoagulation of human RPE cells. METHODS ARPE-19 cells were exposed t...

حیدری, بهروز, یعقوبی, غلامحسین,

A 44 year old woman presented with decreased vision and floaters, started since 4 days before, in her right eye referred to our ophthalmology clinic. On examination, it was found that the best corrected visual acuity was limited to R-E: 20/80 and that of the left eye: 20/20. Fundus examination of the right eye revealed a rhegmatogenous subclinical retinal detachment and vitreous hemorrhage 15 m...

2009
Dimple Modi Paulpoj Chiranand Levent Akduman

PURPOSE To analyze the benefits, efficacy, and complications of the PASCAL((R)) photocoagulation laser system (OptiMedica, Santa Clara, CA, USA) in patients treated at our institution. METHODS We conducted a retrospective chart review of 19 patients (28 eyes) who underwent laser treatment using the PASCAL((R)) photocoagulation system from November 2006 to November 2007. These 28 eyes were div...

Journal: :Chang Gung medical journal 2006
Yi-Cheng Chen Chia-Yun Li San-Ni Chen

Laser photocoagulation might aggravate the ischemia of an area of retinal detachment and predispose the retina to formation of neovascularization and an angioma-like lesion. We present a case of retinal neovascularization (RNV) and an angioma-like lesion occurring after demarcation photocoagulation for rhegmatogenous retinal detachment (RRD). A 20-year-old woman suffered from a retinal atrophic...

2014
Yukari Shirakata Fumio Shiraga Chieko Shiragami Ayana Yamashita Atsushi Fujiwara Daniel Lavinsky Daniel V. Palanker

Program Number: 6345 Poster Board Number: C0122 Presentation Time: 12:00 PM–1:45 PM Long-term results of laser photocoagulation sparing the papillomacular bundle for peripapillary polypoidal choroidal vasculopathy lesions Yukari Shirakata1, Fumio Shiraga2, Chieko Shiragami1, Ayana Yamashita1, Atsushi Fujiwara2. 1Ophthalmology, Kagawa University Faculty of Medicine, Kita-gun, Japan; 2Ophthalmolo...

Journal: :Archives of Iranian medicine 2008
Mohammad-Sadegh Farahvash Amir-Hossein Mahmoudi Mohammad-Mehdi Farahvash Ali Tabatabaee Mohammad Riazi Shiva Mohammadzadeh Houshang Faghihi Mehdi Nilli-Ahmadabadi Ahmad Mirshahi Reza Karkhaneh Zahra Aalami-Harandi Ahmad Javadian Ali Abdolahi Alireza Lashey

BACKGROUND Contrast sensitivity is an important aspect of visual function and is even more important for ordinary daily tasks than visual acuity. Contrast sensitivity function may be deteriorated to a significant level in diabetic retinopathy, especially in diabetic macular edema. The objective of this study was to determine the impact of macular laser photocoagulation-as the standard treatment...

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