Device for sampling tear fluid

Device for sampling tear fluid, comprising:

• an extraction element adapted to be applied on the eye to draw tear fluid therefrom, said extraction element including at least one tube and a distal portion,
• a collection vessel, connected to one of said tube and said distal portion,
• suction means adapted to continuously draw tear fluid from the eye to the collection vessel, through the extraction element for a period greater than 10 minutes once the extraction element is in place,
• wherein the distal portion is configured to be positioned into a conjunctival sac of the eye and the extraction element removes tear fluid which resides in the conjunctival sac,
• wherein the distal portion presents one inner curved side facing the surface of the eye situated under the lower eyelid and one outer curved side facing the lower eyelid, the inner curved side and outer curved side curvatures being chosen in order to correspond respectively to the curvature of the surface of the eye situated under the lower eyelid and to the curvature of the posterior surface of the lower eyelid, and
• wherein the distal portion is linked to the collection vessel through a flexible tube.