Contact lenses with palpebral protuberances

Details Contact lenses with palpebral protuberances Contact lenses with palpebral protuberances

G - Physics

02

C

G02C 7/04 (2006.01)

Patent

CA 2230181

This is a contact lens with, locally, protruding from the external surface (11), in its peripheral area (13), for its dynamic stabilization, at least one palpebral protruberance. According to the invention, this palpebral protruberance (12) is globally extended circumferentially and, at each of its circumferential extremities (15, 16), the slope of its ridge line (L) is between 0.020 and 0.140 and, preferably, between 0.040 and 0.080. Application to contact lenses for oriented optical correction and contact lenses for presbyopia.

Il s'agit d'une lentille de contact du genre comportant, localement, en saillie sur sa surface externe (11), dans sa zone périphérique (13), pour sa stabilisation dynamique, au moins un bossage palpébral (12). Suivant l'invention, ce bossage palpébral (12) est globalement allongé circonférentiellement, et, à l'une et l'autre de ses extrémités circonférentielles (15, 16), la pente de sa ligne de crête (L) est comprise entre 0,020 et 0,140, et, préférentiellement, entre 0,040 et 0,080. Application, notamment, aux lentilles de contact à correction optique axée et aux lentilles de contact pour presbytes.

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