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 ...

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...

Background: Alkaptonuria is a rare genetic disease leading to the accumulation of homogentesic acid in joint and ear cartilage, sclera and some other tissues causing significant morbidity in these patients. In this paper, we report three cases of Alkaptonuria among the family or household members. Case Presentation: A 51-year-old man with mechanical low back and knee pain was referred to Rheuma...

PURPOSE To investigate the in vitro, ex vivo, and in vivo transscleral-retinal pigment epithelium (RPE) permeability of PEDF and structurally related proteins for the exploration of novel routes of protein delivery to the retina. METHODS Monkey RPE cells were cultured on permeable supports to separate apical and basal compartments. Porcine scleral tissue was placed in Ussing chambers to separ...

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...