The structure of blood vessels in the sclerathe white part of the human eye, is unique for every individual, hence it is best suited for human identification. However, this is a challenging research because it has a high insult rate (the number of occasions the valid user is rejected). In this survey firstly a brief introduction is presented about the sclera based biometric authentication. In a...

A 45-year-old male patient presented with necrotizing scleritis after 2 weeks of having undergone ptyregium surgery with bare sclera technique. Examination revealed a scleral thinning measuring 3 x 3 mm with anterior chamber inflammation. Lamellar scleral graft was dissected from the donor sclera and trephined to the approximate size of the scleral melt. Edges of the host scleral melt were fres...

Sclera and finger print vein fusion is a new biometric approach for uniquely identifying humans. First, Sclera vein is identified and refined using image enhancement techniques. Then Y shape feature extraction algorithm is used to obtain Y shape pattern which are then fused with finger vein pattern. Second, Finger vein pattern is obtained using CCD camera by passing infrared light through the f...

OBJECTIVE To observe the treatment outcomes of a crescent-shaped conjunctiva resection combined with conjunctiva sclera fixation for severe conjunctivochalasis. PATIENTS AND METHODS Eleven (22 eyes) patients with severe conjunctivochalasis were enrolled in this study. They consented to undergo crescent-shaped conjunctiva resection and conjunctiva sclera fixation, to evaluate their symptoms an...

Comment. Episcleral neurofibromas and schwannomas likely arise from the long posterior ciliary nerves within the sclera. The ciliary nerves pierce the sclera near the optic nerve and pass anteriorly within the sclera and suprachoroidal space while branching to form a loose connection between the long and short posterior ciliary nerves, leading to 20 to 30 branches at the level of the ciliary bo...

PURPOSE To assess enhanced depth imaging optical coherence tomography (EDI-OCT) visualization of deep posterior pole structures and retrobulbar tissues in myopic eyes and evaluate ocular structural elements that influence this capability. METHODS Thirty consecutive myopic eyes (>-6 diopters) from 21 patients were enrolled. Exclusion criteria included any pathological condition affecting the p...

The sclera is the white outer shell and principal load-bearing tissue of the eye as it sustains the intraocular pressure. We have hypothesized that the mechanical properties of the posterior sclera play a significant role in and are altered by the development of glaucoma-an ocular disease manifested by structural damage to the optic nerve head. An anisotropic hyperelastic constitutive model is ...

PURPOSE To study the detailed cellular and molecular changes in the mouse sclera subjected to experimental glaucoma. METHODS Three strains of mice underwent experimental bead-injection glaucoma and were euthanized at 3 days and 1, 3, and 6 weeks. Scleral protein expression was analyzed with liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) using (16)O/(18)O labeling for q...

PURPOSE To compare the effect of preserving sclera samples in either 95% ethanol or freeze-dried. METHODS Ninety-six samples of human sclera were studied. Half of them were freeze-dried and half preserved in 95% ethanol. Preservation periods of 18, 45, 90 or 174 days were studied. Automated immunostaining was carried out in the Ventana BenchMarkR LT platform using collagen 1 and fibronectin a...