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BACKGROUND The purpose of this research was to study the visual outcome of excimer laser photorefractive keratectomy and laser in situ keratomileusis (LASIK) for the correction of moderate and high myopia. METHODS Twenty partially-sighted eyes of 20 patients were divided into two groups, LASIK and photorefractive keratectomy. Ten eyes underwent LASIK and(More)
Using a modified microkeratome, nasally based central corneal flaps were created on six human blind eyes at a depth of 300 microns. The flaps were allowed to heal with a bandage soft contact lens, using neither sutures nor bioadhesives. The optical quality of the corneas was evaluated with biomicroscopic examination, computer-assisted topography, and(More)
PURPOSE To evaluate the safety and efficacy of Ferrara intrastromal corneal rings in the treatment of eyes with keratoconus without central corneal scarring. SETTING Vlemma Eye Institute, Athens, Greece. METHODS Twenty-six patients with bilateral keratoconus, clear central corneas, and contact lens intolerance participated in the study.(More)
We describe the hardware and software extensions that transform a PC-based low-cost FPGA system into a reconngurable engine for real-time video processing. The hardware extensions include a daughter board for the FPGA system which handles analog and digital colour video conversion. The software extensions include reusable libraries, development tools and a(More)
BACKGROUND A simple new device is proposed for safe and very fast epithelial removal of the cornea. This is a rotating plastic brush that removes the corneal epithelium within a few seconds under irrigation, without causing any mechanical damage to the stromal surface. METHODS Comparative SEM and TEM studies on rabbit corneas were carried out following(More)
PURPOSE To assess the performance of the Pascal dynamic contour tonometer (PDCT) (Swiss Microtechnology AG) by comparing it to Goldmann applanation tonometry (GAT) and noncontact air tonometry (NCT) before and after laser in situ keratomileusis (LASIK). SETTING Vlemma Eye Institute, Athens, Greece. METHODS Intraocular pressure was measured in 118 eyes(More)
PURPOSE To present our early experience in methodology and results of laser in situ keratomileusis (LASIK) in treating moderate and high myopia. SETTING Vardinoyannion Eye Institute of Crete and the Cornea and Refractive Surgery Service, Department of Ophthalmology, Heraklion University Hospital, Crete, Greece. METHODS Forty-three moderately to highly(More)
We examined 92 normal eyes using Javal Ophthalmometer and Corneal Analysis System (EyeSys) intending to compare the keratometric readings obtained by these two instruments. Dioptric power and location at flatter and steeper meridians, keratometric astigmatism values, and average central keratometric power were measured in the central cornea of all eyes.(More)
Intracapsular clear crystalline lens extraction and intraocular lens (IOL) implantation were performed in 4 highly myopic eyes of 2 patients with Marfan's syndrome. One eye of each patient received an anterior chamber IOL and the other, a scleral-fixated posterior chamber IOL. The preoperative spherical equivalent ranged between -14.50 and -28.00 diopters(More)
We examined three patients who developed keratitis after myopic photorefractive keratectomy. All patients were treated on the same day and in all three cases paraformaldehyde tablets were used for disinfection of the excimer laser iris cone. All patients developed an intense postoperative corneal inflammation that resulted in corneal opacities. In the first(More)