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Refractive properties of interfaces due to the use of vitreous substitutes in vitreoretinal surgery: a ray tracing approach. Part I: Transpupillary surgery
No full textA ray tracing approach to model the refractive properties of interfaces due to the use of vitreous substitutes in vitreoretinal surgery
No full textRefractive properties of interfaces due to the use of vitreous substitutes in vitreoretinal surgery: a ray tracing approach. Part II: Intraocular surgery
No full textRefractive properties of interfaces due to the use of vitreous substitutes in vitreoretinal surgery: a ray tracing approach. Part III: Modelling the effect of an air bubble...
No full textLaser light absorption in the vitreous body after fluorescein angiography in diabetic patients
No full textCorneal autofluorescence in presence of diabetic retinopathy
No full textRecently corneal autofluorescence has been proposed as an ocular diagnostic tool for diabetic retinopathy. The method is based on the sensible increase of the natural fluorescence of corneal tissue within specific wavelength in presence of early stage of diabetic retinopathy. The main advantages of this method are that the corneal autofluorescence has been demonstrated to be not age-related and that the cornea is readily accessible to be investigated. In this study 47 insulin-dependent diabetes mellitus and 51 non-insulin- dependent diabetes mellitus patients aged 20 - 90 years have been considered. Patients were selected from the Eye Clinic of S. Raffaele Hospital. The modified Airlie House classification was used to grade the diabetic retinopathy. Corneal autofluorescence has been measured by using both a specifically designed instrument and the Fluorotron Master. Corneal autofluorescence mean value for each diabetic retinopathy measured by using both the instruments correlated with the retinopathy grade
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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