Process, device and composite part for manufacturing a hybrid lens

A device for manufacturing a hybrid contact lens formed of a rigid central portion connected to a flexible peripheral portion by an adhesive material, starting from a rigid disk that is oxygen-permeable and from a flexible disk that is hydrophilic, wherein the device comprises:

• means for cutting a concave surface on the flexible disk;
• means for cutting a convex surface complementary to the concave surface on the rigid disk;
• means for partially hydrating the flexible disk to a defined first level of hydration;
• means for gluing, using the adhesive material that comprises cyanoacrylate or a derivative of cyanoacrylate, the rigid disk and the flexible disk to each other to form a composite part;
• means for drying the composite part for a defined time sufficient to allow for dehydration of the flexible disk to a second defined level of hydration lower than the first;
• and
• means for dry-cutting the composite part by turning and polishing.

A composite part for manufacturing a hybrid contact lens formed of a rigid central portion connected to a flexible peripheral portion, wherein the composite part comprises:

• a rigid disk that is oxygen-permeable and that forms a first layer;
• a flexible disk that is hydrophilic, that is hydrated to a first defined level of hydration between 54% and 60%, and that forms a third layer;
• and
• an adhesive bonding material that comprises cyanoacrylate or a derivative of cyanoacrylate, that is between the first and third layers, and that forms a second layer, wherein the first, second and third layers are superposed.