This paper presents a method for locating the iris borders in images of the cornea. It uses a combination of a priori information, statistics and active contours to both find the iris borders and assess its own success or failure. When applied to 107 images from 11 different people with varying eye colours including light blue and dark brown the algorithm reports 7 images for which it failed to...

This paper explores the use of deformable mesh for registration of microscopic iris image sequences. The registration, as an effort for stabilizing and rectifying images corrupted by motion artifacts, is a crucial step toward leukocyte tracking and motion characterization for the study of immune systems. The image sequences are characterized by locally nonlinear deformations, where an accurate ...

purpose : to determine the distribution of iris colors in the population of tehran and to assess possible associations between iris color and ocular disorder methods : through a stratified random cluster sampling approach, 160 clusters were selected in different municipality districts of tehran, and the approached households were invited to a clinic. after the initial interview, all participant...

SUMMARY Iris cyst occurs post intraocular -surgery or post penetrating trauma, when corneal epithelial cells or conjunctiva} epithcells gains access to the anterior chamber, with cells may continue to grow & covering all available surface and formed iris cyst. As the cyst grow may caused glaucoma or block pupil area & leads to vision treatment of all form of iris cyst and epithelial down growt...

purpose : to report two young patients with unilateral pseudoexfoliation (pex) syndrome case reports : two young patients with pex syndrome were examined. the first was a 30-year-old woman who had a history of penetrating ocular trauma with iris prolapse in the right eye that subsequently developed pex material deposition on pupillary border and anterior lens capsule. the second was a 13-year-o...

Iris recognition is one of the most reliable methods for identification. In general, itconsists of image acquisition, iris segmentation, feature extraction and matching. Among them, iris segmentation has an important role on the performance of any iris recognition system. Eyes nonlinear movement, occlusion, and specular reflection are main challenges for any iris segmentation method. In thi...

Iris recognition is one of the most reliable methods for identification. In general, itconsists of image acquisition, iris segmentation, feature extraction and matching. Among them, iris segmentation has an important role on the performance of any iris recognition system. Eyes nonlinear movement, occlusion, and specular reflection are main challenges for any iris segmentation method. In thi...

• Maximizing Wavefront-Guided Laser Vision Correction Outcomes with Iris Registration Technology • Enhancing Wavefront-Optimized Results with Wavefront-Guided LASIK • Mixing and Matching Multifocal IOLs: Best of Both Worlds? • Achieving Spectacle Independence with Premium Lens Technology • Understanding Refractive Lenticular Patients • The Role of Intermediate Vision in the Aging Population • A...