Small optic zone contact lenses and methods

Details Small optic zone contact lenses and methods Small optic zone contact lenses and methods

G - Physics

02

C

G02C 7/04 (2006.01) G02B 1/00 (2006.01) G02C 7/06 (2006.01)

Patent

CA 2756799

Contact lenses provide clear visual acuity and simultaneously present a myopic defocused image to the lens wearer at both near viewing distances and distant viewing distances. The present contact lenses have an optic zone that has a radius of less than or equal to 2.5 mm. Stated differently, the diameter of the optic zone of the present contact lenses is 5.0 mm or less. The present lenses are used in methods to reduce progression of myopia in a person capable of ocular accommodation. Methods of manufacturing the present lenses are described.

La présente invention concerne des lentilles de contact assurant à leur porteur une acuité visuelle nette tout en donnant une image myopique défocalisée, aussi bien pour la vision en champ proche que pour la vision en champ lointain. Ces lentilles de contact comportent une zone optique dont le rayon n'excède pas 2,5 mm. Autrement dit, le diamètre de la zone optique des lentilles de contact de l'invention n'excède pas 5 mm. Ces lentilles conviennent pour des procédés visant à réduire la progression de la myopie chez un individu capable d'accommodation oculaire. L'invention concerne également des procédés de fabrication des lentilles de l'invention.

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