1,721,091 research outputs found
Pathogenesis of posterior capsular opacification. Part I. Epidemiological and clinico-statistical data
No full textWe examined 895 eves having extracapsular cataract surgery; 403 had an intraocular lens (IOL) implanted and 492 did not. The incidence of posterior capsular opacification was 7.69% in the eyes with an IOL and 14.23% in the eyes without an IOL. If we exclude complicated cataracts from the cases that did not have an IOL, the incidence of posterior capsular opacification decreases to 9.06%. Various models of implanted IOLs showed different incidences of posterior capsular opacification: For J-looped lenses the incidence was 11.02%; for Frezzotti-Caporossi lenses, 7.35%. The follow-up Nvas too short for soft lenses. The Frezzotti-Caporossi lens can he inserted with the convex side either anterior or posterior. A statistical evaluation shows that the reverse optic or posterior convex orientation in the bag caused a lower incidence of posterior capsular opacification (3.01%). © 1990, American Society of Cataract and Refractive Surgery. All rights reserved
Technological innovations in corneal collagen crosslinking: improving the outcomes of progressive keratoconus therapy
No full text
Role of computer-assisted analysis of the corneal endothelium in vitreoretinal surgery with intraocular silicone oil injection: a technical report
No full textThe innermost lining of the cornea consists of a single layer of cells called the endothelium. Despite its name, the endothelium of the cornea differs considerably from the vascular endothelium, both functionally and morphologically. The corneal endothelium plays a fundamental role in maintaining the transparency of the corneal membrane, as the result of both its function as a barrier against penetration of the aqueous humor in the parenchyma and its ability to remove water from the stroma (usually referred to as the endothelial "pump" function). Any abnormality in the corneal endothelium causes, first, the impairment of its function as a barrier and pump due to the loss of stromal anti-turgor mechanisms, followed by edema and possible development into keratopathy. The specular microscope is an instrument which makes it possible to see the endothelial "mosaic" in the reflected image of the posterior corneal surface. A large variety of clinical specular microscopes is presently available, both contact and non-contact, which allow, for easy and rapid photography of the corneal endothelium "in vivo". In the present case, we used a non-contact computerized specular microscope to analyze the corneal endothelium in a group of patients affected by retinal detachment who needed to undergo vitreoretinal surgery with immission of silicone oil into the vitreal chambe
Corneal CrossLinking with Riboflavin and UVA for the treatment of Keratoconus. Letter To Editor, Reply.
No full textAttendibilità clinica di vari Tonometri di uso corrente nella sindrome di ipertensione oculare
No full textConfocal microscopy in a case of crystalline keratopathy in a patient with smouldering multiple myeloma
No full textWe report the clinical and confocal microscopic findings of the cornea in a patient with smouldering multiple myeloma (SMM) using in vivo scanning laser confocal microscopy. A 72-year-old female underwent a complete ophthalmological examination including slitlamp biomicroscopy with digital photography, HRT II laser scanning in vivo confocal microscopy and haematological laboratory assessment. Corneal biomicroscopy revealed the presence of bilateral diffuse microgranular tiny grey opacities. In vivo confocal microscopy showed randomly oriented hyper-reflective needle-shaped crystals throughout all levels of the stroma, sparing epithelium and endothelium. In vivo confocal microscopy was very helpful in the differential diagnosis by allowing the nature of the corneal deposits to be established, revealing the typical aspect of the crystals, and excluding granular dystrophy, leading to a suspected diagnosis of SMM. Crystalline corneal deposits may easily be confused as crumb-like opacities typical of granular dystrophy on slitlamp examination even by experienced ophthalmologists. © Springer Science+Business Media 2013
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