in the current iris recognition systems, noise removing step is only used to detect noisy parts of the iris region and features extracted from there will be excluded in matching step. whereas depending on the filter structure used in feature extraction, the noisy parts may influence relevant features. to the best of our knowledge, the effect of noise factors on feature extraction has not been c...

Neovascular glaucoma is a challenging disease in its pathogenesis and treatment. Ischemic retinopathies can lead to neovascular glaucoma due to newly formed vessels on the iris surface and anterior chamber angle. Eyes with neovascular glaucoma can exhibit high intraocular pressure, usually treated by retinal coagulation, cyclodestructive procedures, or drainage procedures. Based on experimental...

To report the efficacy of combination therapy (bevacizumab and photocoagulation) in a case of Eales Disease this study has been performed. Bevacizumab (Avastin, 1.25 mg/0.05 ml) was injected intravitreously for the treatment of iris and retinal neovascularization in a 56-year old Hispanic female with photocoagulation treatment to control the recurrence of vitreous haemorrhage. Our results revea...

Abbreviations: UGH: Uveitis-Glaucoma-Hyphema; IOL: Intraocular Lens; ACIOL: Anterior Chamber Intraocular Lens; PCIOL: Posterior Chamber Intraocular Lens; GCA: Giant Cell Arteritis; NVI: Neovascularization of the Iris; YAG: Yttrium Aluminum Garnet; OD: Right Eye; OS: Left Eye; HbA1c: Hemoglobin A1C; PEE: Punctate Epithelial Erosion; IEI: Illinois Eye Institute; QD: 1 time a day; BID: 2 times a d...

Neovascular glaucoma (NVG) is a severe form of glaucoma with devastating visual outcome attributed to new blood vessels obstructing aqueous humor outflow, usually secondary to widespread posterior segment ischemia. Invasion of the anterior chamber by a fibrovascular membrane initially obstructs aqueous outflow in an open-angle fashion and later contracts to produce secondary synechial angle-clo...

OBJECTIVE To test the hypothesis that retinochoroidal collateral veins (RCVs), or alternatively, retinociliary or optociliary shunts/collaterals/veins or opticociliary anastomoses, act protectively against the development of anterior segment neovascularization (ASN) following central retinal vein occlusion (CRVO). DESIGN Case-control retrospective medical record review of patients with CRVO. ...

We report a case of ocular ischemic syndrome accompanied by neovascular glaucoma that was successfully treated with Bevacizumab. A 70-year-old male patient diagnosed with neovascular glaucoma of the left eye 3-4 years prior complained of continuous left eye pain and declining visual acuity despite receiving the latest treatment methods. At the time of admission the patient had no light percepti...

The evolution and characteristics of diabetic rubeosis were studied in 33 eyes, and the following vascular abnormalities were found: (1) Dilated leaking capillaries around the pupil; (2) irregular or slow filling of the radial arteries; (3) superficial arborising newly formed vessels, usually starting in the chamber angle; and (4) dilatation and leakage of the radial vessels either before or af...