No abstract

In the period between February 1992 and June 1996, the authors performed extra-ocular muscle echobiometry on 163 patients with Graves’ disease. The aim of this study is the evaluation of changes occurring in several clinical stages. The authors noted an increase in internal muscular reflectivity in the advanced phases and an irregular structure in the early stages. Controversial results in the literature warrant mastery of the method and further research.

In cases of keratoconus and consequent penetrating keratoplasty, the refractive requirements of the patient determine the dimensions of the donor button and the receiving wound size. The pre-operative biometric evaluation of the axial parameters may induce the surgeon to choose an oversized button to obtain the right curvature of the cornea and avoid hypermetropia. In this study we present 20 patients transplanted between 1993 and 1995, 13 female, 7 male, aged between 23 and 45 years. These cases demonstrate the utility of this easy and economic technique.

A-B scan echography provides accurate information on the location, the nature, the extension of a neoplasm and the involvement of neighbouring tissues as well as on the postsurgical evolution. In this study, we intend to give accurate and useful indications to the surgeon concerning conservative surgery and the follow-up after sclero-uveotumorectomy in cases of uveal neoformations. Between January 1988 and June 1996, we examined 46 patients by means of echography before and after sclero-uveotumorectomy.

In this work we underlined the contribution of echography in the parasurgical treatment (photocoagulative) of melanomas of small dimensions. Fourteen patients were examined; some of them were treated with argon laser, others with krypton laser. The echographic examination was performed with the A-B scan technique, naturally accompanied by fluorangiography before and after the operation. An accurate echographic and fluorangiographic follow-up makes it posible to control the evolution of the lesions efficaciously. From this work it is clear how echography gives highly reliable results which allow us, therefore, both to make an adequate therapeutic decision and to evaluate the efficaciousness of the treatment itself.