Method and apparatus for encapsulating a rigid insert in a contact lens for correcting vision in astigmatic patients

摘要

The present invention, as described above and as further defined by the claims below, provides methods for forming an Ophthalmic Lens that encapsulates a Rigid Insert, wherein the Rigid Insert may be tailored to correct specific astigmatic characteristics of an eye and apparatus for implementing such methods, as well as Ophthalmic Lenses formed with the Rigid Inserts.

主权项

1. A method of forming an ophthalmic lens with a rigid insert, the method comprising the steps of:
depositing an initial amount of reactive monomer mixture into a front curve mold part, wherein the initial amount of reactive monomer mixture is less than an amount necessary for formation of the ophthalmic lens; placing the rigid insert on the initial amount of reactive monomer mixture; precuring the initial amount of reactive monomer mixture to fixedly hold the rigid insert proximate to the front curve mold part, wherein the precuring forms a front curve assembly; depositing an additional amount of reactive monomer mixture necessary for formation of the ophthalmic lens into the front curve assembly, wherein the initial and additional amounts of reactive monomer mixture encapsulate the rigid insert; placing a back curve mold part proximate to the front curve assembly; curing the initial and additional amounts of reactive monomer mixture to form the ophthalmic lens; demolding the front curve and back curve mold parts; removing the ophthalmic lens from the demolded front curve and back curve mold parts; and hydrating the ophthalmic lens.