نتایج جستجو برای: sclera
تعداد نتایج: 2041 فیلتر نتایج به سال:
Sclera vein recognition is an evolving technology for the pattern recognition system that recognize a person for authentication .sclera vein recognition presents a challenging problem in the field of image analysis and computer vision, and as such has received a great deal of attention over the last few years because of its many applications in various domains. This paper has several contributi...
In the present study, we compared hemolytic activities of C1, C4, C2, C3, C5, C6 and C7 in the anterior and posterior sclera. Additionally, we used radial immunodiffusion to measure levels of Factor B, IgG, IgA and albumin in the anterior and posterior sclera. Except for C1, complement levels were significantly higher in the posterior than anterior sclera. Additionally, levels of immunoglobulin...
purpose: to determine the visual and anatomic outcomes of epikeratoplasty in 7 eyes of 6 patients with keratoglobus. method: in a retrospective interventional case series, seven eyes of six patients with keratoglaobus (kgb) aged 5 to 39 years underwent epikeratoplasty. three patients (3 eyes) had blue sclera, hypermobile joints, and consanguineous parents and 3 patients (4 eyes) had only kgb. ...
PURPOSE To compare the biomechanical properties of porcine, rabbit, and human sclera before and after riboflavin/ultraviolet-A (UVA) collagen cross-linking (CXL). METHODS Eight rabbits, 8 porcine eyeballs, and 8 human eyeballs were included. One rabbit eye and half of each bisected human and porcine eyeball were treated with riboflavin/UVA CXL. Untreated fellow rabbit eyes and eyeball halves ...
Redness or yellowness of the sclera (the light part of the eye) are known signs of illness, as is looking older than one's actual age. Here we report that the color of the sclera is related to age in a large sample of adult Caucasian females. Specifically, older faces have sclera that are more dark, red, and yellow than younger faces. A subset of these faces were manipulated to increase or decr...
In this paper, a new iris localization method for mobile devices is presented. Our system uses both intensity and saturation threshold on the captured eye images to determine iris boundary and sclera area, respectively. Estimated iris boundary pixels which have been placed outside the sclera will be removed. The remaining pixels are mainly the boundary of iris inside the sclera. Then, circular ...
The objective of this study was the comparison of Bare Sclera and Rotational Flap methods in primary pterygium surgery. This study was retrospective Cohort and studied population were 80 patients (40 patients in each group) with primary pterygium in stage II and III operated in Hamadan Emam Khomeini hospital , during 2001-2003. All of the patients followed up...
Spectral measurements of sclera reflectance during its interaction with aqueous solutions of both Cortexin and Retinalamin have been carried out. Twenty three samples included in the study were human sclera and rabbit sclera in vitro. The results of the experiments have shown that penetration of Cortexin as well as Retinalamin into sclera tissue leads to the decrease of sclera reflection due to...
Introduction In order to treat uveal Melanoma , first, radioactive seeds are laid on a silicone- made substance which is called Silastic after that they are inserted in the plaque, and finally, this plaque containing silicone-made substance is stitched to the sclera surface. The dose gradient within the tumor and healthy tissues can be varied due to changing the Silastic thickness between scler...
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