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...

Bone morphogenesis proteins (BMPs) are multi-functional growth factors. They are expressed in retina, retinal pigment epithelium (RPE) and sclera and serve as a regulator in the growth and development of the eye. This article reviewed the chondrogenic potency of the sclera, biochemical and pathological changes of myopic scleral tissue and the differentiation of chondrogenesis by BMP-2. We propo...

OBJECTIVES To determine the epidemiology and recurrence rate of pterygium after excision using bare sclera technique. DESIGN Prospective non-comparative study. SETTING Ophthalmology unit, Korle-Bu Teaching Hospital, Accra, Ghana. METHODS The study involved 60 consecutive patients with primary apterygial from July 1998 to December 2000 who had bare sclera excision after informed consent. T...

“Uveal effusion” was first described in a nanophthalmic patient by Schepens and Brockhurst in 1963 [1]. Gass and Jallow [2] described a similar syndrome in 1982, idiopathic uveal effusion syndrome, in healthy middle-aged men with normal eyes [2]. These patients usually present with visual loss in either one or both eyes with a superior visual field defect derived from an inferior RD [3]. It is ...

AIM The use of an animal model to study the aqueous dynamic and the histological findings after deep sclerectomy with (DSCI) and without collagen implant. METHODS Deep sclerectomy was performed on rabbits' eyes. Eyes were randomly assigned to receive collagen implants. Measurements of intraocular pressure (IOP) and aqueous outflow facility using the constant pressure method through cannulatio...

PURPOSE Our previous studies indicated that while 20 nm particles are rapidly cleared from the periocular space of the rat following posterior subconjunctival injection, 200 nm particles persisted for at least two months. To understand faster clearance of 20 nm particles, the purpose of this study was to determine transscleral permeability and in vivo disposition in the presence and absence of ...