1,720,981 research outputs found

    Rhegmatogenous retinal detachment following Nd-YAG laser capsulotomy

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    Gli AA. riportano uno studio retrospettivo di 487 pazienti sottoposti a capsulotomia Nd-YAG laser effettuata dal gennaio 1985 al dicembre 1988. Otto pazienti hanno sviluppato un distacco retinico regmatogeno posi-trattamento. Sette pazienti erano afachici, uno pseudofachico. L'energia laser utilizzata per la capsulotomia non è stata particolarmente elevata. Le aperture capsulari erano inferiori a 3 mm ., eccetto un caso. L'intervallo tra la capsulotomia e la comparsa del distacco retinico variava dai 2 ai 48 mesi (media 23)

    Mechanisms of secondary glaucoma in eyes with advanced retinoblastoma: histopathological

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    Purpose: The association between retinoblastoma (RTB) and secondary glaucoma is well known. The most common cause of secondary glaucoma in RTB is iris neovascularization, followed by pupillary block and tumor seeding in the anterior chamber. Aim of this study is to review the glaucoma-inducing mechanism in a large italian population of RTB patients and discuss our experience with these cases Methods: . In the last five years we observed 152 cases of RTB; in 18 cases (17%) during the first examination under general anesthesia, elevated intraocular pressure was observed. Histopathological examination of these eyes was performed to understand the mechanisms inducing glaucoma. Results: In six patients only (33%) the mechanism seemed to be an isolated one (four tumor seeding and two angle closure), in 12 patients (66%) a combination of more than one mechanism was observed (angle closure, tumor seeding and iris neovascularization Conclusions: Although glaucoma is a secondary clinical issue in RTB management and care of its presence, revealed by a thorough ocular exam of the anterior segment, can guide the clinician in assessing the overall condition of the affected ey

    Possibilities and limitations of imaging techniques in the infiltrative orbital lesions. [POSSIBILITA E LIMITI DELLA SEMEIOLOGIA D'IMMAGINE NELLA PATOLOGIA INFILTRATIVA DELL'ORBITA]

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    The A uthors repo rt some cases (3 basai celi carcinoma, l l acr imai gian d adenocar cin oma , l h ema ngioperi cyto­ ma) wh ere imagin g techniques (CT-scan) could not clarify clinica! suspi cions or wh e r e intra-opera tive findings were in con trast with images. Pa rti c ularl y difficult was t h e differentiation betw een neoplastic a nd cicatri cial (especiall y aft e r radiotherapy) tiss u e
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