S X Stevens

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Beta-hemolysin production is a variable trait of the Lancefield group D streptococcus, Enterococcus faecalis. The E. faecalis hemolysin is encoded by large transmissible plasmids. The variable nature of this putative virulence factor provided an ideal system for testing its contribution in experimental endophthalmitis. In this study, isogenic E. faecalis(More)
Recent advances in ophthalmic anterior segment imaging: a new era for ophthalmic diagnosis? " , Brit. J Ophthalmol. 91, 551-557 (2007). [7] C. O'Donnell, C. Maldonado-Codina, " Agreement and repeatability of central thickness measurement in normal corneas using ultrasound pachymetry and the OCULUS pentacam " , Cornea 24, 920-924 (2005). ABSTRACT: The(More)
PURPOSE To compare the reproducibility of computerized videokeratoscopy systems by using normal eyes and calibrated objects. METHODS We evaluated the reproducibility of three commercially available videokeratoscopes [EyeSys, TechnoMed C-Scan, and PAR Corneal Topography System (CTS)] with the manual keratometer (Bausch & Lomb) by using calibration spheres(More)
A mirror needle holder has been designed to facilitate the passage of a needle through the ciliary sulcus during transscleral fixation of posterior chamber (PC) intraocular lens (IOLs). Two human postmortem eyes were used to demonstrate the efficacy of this mirror used as the needle holder. This method was compared with the current method of passing sutures(More)
The measurement of the corneal radius of curvature centrally and in the corneal periphery is exceedingly difficult because of variables in photography and data acquisition. We present a technique of Automated image scanning of corneal photographs which provides a more accurate and reproducible analysis of the paracentral corneal contour. We analyzed the(More)
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