[The tear crystallization test in sicca syndrome].

The tear crystallization test permits an easy and quick identification of the lacrimal film alterations existent in the Sicca syndrome. From the 29 crystallization tests done on patients suffering from Sicca syndrome medium and severe form the most frequent was type III crystallization (21 cases-73%), type IV (4 cases-14%) and type I (1 case-3%). Type III and type IV of crystallization occurs in 87% of patients with Sicca syndrome in correspondence with the intensity of the dry-eye symptoms and with the objective qualitative and quantitative tests of the lacrimal film and corneo-conjunctival surface examination (Schirmer test I, BUT, rose bengal 1%, fluorescein 19%).

[Pressure stress in glaucoma--assessment through classical techniques and computational modelling].

Unlabelled: Even if glaucoma remains a major eye illness with unknown etiology, the importance of vascular factors associated with mechanical factors contributing to the pathogenesis and development of glaucomatous optic neuropathy has been emphasized. the objective of the study consists in elaboration of a biomechanical model of the human eye correlated with clinical and ultrasonography evaluations aiming to early identification of changes induced by pressure stress in open angle glaucoma (OAG) at retrobulbar arteries and optic nerve head level.

Method And Material: The present study included a lot formed by 97 patients without glaucoma, aged 20-75 years (lot 1) and a lot formed by 71 patients with open angle glaucoma, aged 45-80 years (lot 2).