Ophthalmological device for the treatment of keratoconus, comprising: • a cylindrical reservoir (2) made of non-conductive material open at the top and bottom the reservoir formed by two telescopically engaged portions (2,2"): The lower portion is open at the bottom and is connected to a cylindrical chamber of smaller diameter also open at the bottom. • - The cylindrical chamber is formed by an external annular chamber (8) concentrically arranged around the chamber. The annular chamber is closed at the top and open at the bottom and is adapted to be placed on the eye. • - a first metallic conductor (22), housed in the container (2,6) connected to a terminal of a DC voltage generator (24), to the other terminal of which a second metallic conductor (26) is connected - a first conduit (28) provided with closing means (30) one end of the first conduit flows into the annular reservoir (8), the other end being located externally to the latter, whereby vacuum may be applied through the first conduit and • - a second conduit (32) provided with closing means (34) one end of the second conduit passes through said annular reservoir at its lower edge and flows into the container (2), the other end being located externally to the said annular reservoir (8). During the irradiation phase, a hydrating solution is administered from above through the metallic conductor that touches the eye and is released through the conduit so as to avoid the excessive absorption of incident energy by the hydrating solution while maintaining a minimum thickness and constant hydrating solution on the ocular surface.La présente concerne un dispositif ophtalmologique pour le traitement du kératocône, comprenant : - un réservoir cylindrique (2) en un matériau non conducteur ouvert au niveau de son extrémité supérieure et de son extrémité inférieure, le réservoir étant formé de deux parties (2, 2) accouplées de façon télescopique. La partie inférieure est ouverte au niveau de son extrémité inférieure et
